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You plan to visit 10 European cities for 26 days in total. You only take direct flights to commute between cities. You want to spend 2 days in Munich. You want to spend 2 days in London. You would like to visit Zurich for 3 days. You are going to attend a wedding in Zurich between day 21 and day 23. You plan to stay in Valencia for 3 days. You would like to meet your friends at Valencia between day 19 and day 21 to tour together. You plan to stay in Dublin for 5 days. You have to attend a workshop in Dublin between day 15 and day 19. You want to spend 4 days in Santorini. You plan to stay in Lisbon for 5 days. You want to spend 4 days in Porto. From day 6 to day 9, there is a annual show you want to attend in Porto. You would like to visit Stuttgart for 2 days. During day 13 and day 14, you have to attend a conference in Stuttgart. You would like to visit Prague for 5 days. Here are the cities that have direct flights: Dublin and Santorini, Stuttgart and Valencia, Porto and Stuttgart, Porto and Zurich, Dublin and Valencia, Lisbon and Stuttgart, Prague and Zurich, Prague and London, Lisbon and Valencia, Prague and Munich, Munich and Dublin, Porto and Lisbon, Prague and Dublin, Dublin and Zurich, London and Santorini, London and Valencia, Munich and Zurich, London and Zurich, Munich and Lisbon, Zurich and Santorini, Munich and London, London and Dublin, Munich and Porto, Prague and Valencia, Porto and Valencia, Lisbon and London, Munich and Valencia, Prague and Lisbon, Porto and Dublin, Stuttgart and London, Lisbon and Dublin, Valencia and Zurich, Lisbon and Zurich. Find a trip plan of visiting the cities for 26 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-5:** Arriving in Dublin and visit Dublin for 5 days. **Day 5:** Fly from Dublin to Santorini. **Day 5-6:** Visit Santorini for 2 days. **Day 6:** Fly from Santorini to Porto. **Day 6-9:** Visit Porto for 4 days. **Day 9:** Fly from Porto to Lisbon. **Day 9-13:** Visit Lisbon for 5 days. **Day 13:** Fly from Lisbon to Stuttgart. **Day 13-14:** Visit Stuttgart for 2 days. **Day 14:** Fly from Stuttgart to Prague. **Day 14-19:** Visit Prague for 6 days. **Day 19:** Fly from Prague to Valencia. **Day 19-21:** Visit Valencia for 3 days. **Day 21:** Fly from Valencia to Zurich. **Day 21-23:** Visit Zurich for 3 days. **Day 23:** Fly from Zurich to Munich. **Day 23-25:** Visit Munich for 3 days. >>>1:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-5:** Arriving in Lisbon and visit Lisbon for 5 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-9:** Visit Porto for 5 days. **Day 9:** Fly from Porto to Dublin. **Day 9-13:** Visit Dublin for 5 days. **Day 13:** Fly from Dublin to Stuttgart. **Day 13-14:** Visit Stuttgart for 2 days. **Day 14:** Fly from Stuttgart >>>2:no response >>>3:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to London. **Day 2-3:** Visit London for 2 days. **Day 3:** Fly from London to Dublin. **Day 3-7:** Visit Dublin for >>>4:no response >>>5:no response >>>6:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-5:** Arriving in Dublin and visit Dublin for 5 days. **Day 5:** Fly from Dublin to Santorini. **Day 5-6:** Visit Santorini for 2 days. **Day 6:** Fly from Santorini to Lisbon. **Day 6-9:** Visit Lisbon for 4 days. **Day 9:** Fly from Lisbon to Porto. **Day 9-10:** Visit Porto for 2 days. **Day 10:** Fly from Porto to Stuttgart. **Day 10-13:** Visit Stuttgart for 4 days. **Day 13:** Fly from Stuttgart to Munich. **Day 13-14:** Visit Munich for 2 days. **Day 14:** Fly from Munich to Prague. **Day 14-19:** Visit Prague for 6 days. **Day 19:** Fly from Prague to Valencia. **Day 19-21:** Visit Valencia for 3 days. **Day 21:** Fly from Valencia to Zurich. **Day 21-23:** Visit Zurich for 3 days. >>>7:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-5:** Arriving in Prague and visit Prague for 5 days. **Day 5:** Fly from Prague to Lisbon. **Day 5-9:** Visit Lisbon for 5 days. **Day 9:** Fly from Lisbon to Porto. **Day 9-12:** Visit Porto for 4 days. **Day 12:** Fly from Porto to Munich. **Day 12-13:** Visit Munich for 2 days. **Day 13:** Fly from Munich to Stuttgart. **Day 13-14:** Visit Stuttgart for 2 days. **Day 14:** Fly from Stuttgart to Dublin. **Day 14-18:** Visit Dublin for 5 days. **Day 18:** Fly from Dublin to Santorini. **Day 18-21:** Visit Santorini for 4 days. **Day 21:** Fly from Santorini to Valencia. **Day 21-23:** Visit Valencia for 3 days. **Day 23:** Fly from Valencia to Zurich. **Day 23-25:** Visit Zurich for 3 days. **Day 25:** Fly from Zurich to London. **Day 25-26:** Visit London for 2 days. SOLUTION:Here is the trip plan for visiting the 10 European cities for 26 days: **Day 1-5:** Arriving in Prague and visit Prague for 5 days. **Day 5:** Fly from Prague to Munich. **Day 5-6:** Visit Munich for 2 days. **Day 6:** Fly from Munich to Porto. **Day 6-9:** Visit Porto for 4 days. **Day 9:** Fly from Porto to Lisbon. **Day 9-13:** Visit Lisbon for 5 days. **Day 13:** Fly from Lisbon to Stuttgart. **Day 13-14:** Visit Stuttgart for 2 days. **Day 14:** Fly from Stuttgart to London. **Day 14-15:** Visit London for 2 days. **Day 15:** Fly from London to Dublin. **Day 15-19:** Visit Dublin for 5 days. **Day 19:** Fly from Dublin to Valencia. **Day 19-21:** Visit Valencia for 3 days. **Day 21:** Fly from Valencia to Zurich. **Day 21-23:** Visit Zurich for 3 days. **Day 23:** Fly from Zurich to Santorini. **Day 23-26:** Visit Santorini for 4 days.

You plan to visit 4 European cities for 17 days in total. You only take direct flights to commute between cities. You want to spend 7 days in Nice. You are going to attend a wedding in Nice between day 5 and day 11. You want to spend 5 days in Mykonos. You plan to stay in Vilnius for 4 days. During day 14 and day 17, you have to attend a conference in Vilnius. You would like to visit Warsaw for 4 days. Here are the cities that have direct flights: Warsaw and Vilnius, Mykonos and Nice, Nice and Warsaw. Find a trip plan of visiting the cities for 17 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-5:** Arriving in Nice and visit Nice for 5 days. **Day 5:** Fly from Nice to Mykonos. **Day 5-10:** Visit Mykonos for 6 days. **Day 10:** Fly from Mykonos to Warsaw. **Day 10-14:** Visit Warsaw for 5 days. **Day 14:** Fly from Warsaw to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. >>>1:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-4:** Arriving in Warsaw and visit Warsaw for 4 days. **Day 4:** Fly from Warsaw to Nice. **Day 4-11:** Visit Nice for 8 days. **Day 11:** Fly from Nice to Mykonos. **Day 11-15:** Visit Mykonos for 5 days. **Day 15:** Fly from Mykonos to Vilnius. **Day 15-17:** Visit Vilnius for 3 days. >>>2:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-4:** Arriving in Mykonos and visit Mykonos for 5 days. **Day 4:** Fly from Mykonos to Nice. **Day 4-11:** Visit Nice for 7 days. **Day 11:** Fly from Nice to Warsaw. **Day 11-14:** Visit Warsaw for 4 days. **Day 14:** Fly from Warsaw to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. >>>3:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-5:** Arriving in Nice and visit Nice for 5 days. **Day 5-11:** Visit Nice for 6 days. **Day 11:** Fly from Nice to Mykonos. **Day 11-15:** Visit Mykonos for 5 days. **Day 15:** Fly from Mykonos to Warsaw. **Day 15-18:** Visit Warsaw for 4 days. **Day 18:** Fly from Warsaw to Vilnius. **Day 18-20:** Visit Vilnius for 4 days. >>>4:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-7:** Arriving in Nice and visit Nice for 7 days. **Day 7:** Fly from Nice to Mykonos. **Day 7-12:** Visit Mykonos for 5 days. **Day 12:** Fly from Mykonos to Vilnius. **Day 12-14:** Visit Vilnius for 3 days. **Day 14:** Fly from Vilnius to Warsaw. **Day 14-17:** Visit Warsaw for 4 days. >>>5:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-4:** Arriving in Vilnius and visit Vilnius for 4 days. **Day 4:** Fly from Vilnius to Nice. **Day 5-11:** Visit Nice for 7 days. **Day 11:** Fly from Nice to Mykonos. **Day 11-17:** Visit Mykonos for 6 days. **Day 17:** Fly from Mykonos to Warsaw. **Day 17-18:** Visit Warsaw for 2 days. **Day 18:** Fly from Warsaw to Vilnius. **Day 18:** Fly from Vilnius to home. >>>6:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-5:** Arriving in Nice and visit Nice for 5 days. **Day 5:** Fly from Nice to Mykonos. **Day 5-10:** Visit Mykonos for 6 days. **Day 10:** Fly from Mykonos to Warsaw. **Day 10-14:** Visit Warsaw for 5 days. **Day 14:** Fly from Warsaw to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. >>>7:It is impossible to create a trip plan that meets all the constraints provided. Here's why: * **Nice Constraint:** You must be in Nice for a wedding between day 5 and day 11 (7 days). * **Vilnius Constraint:** You must be in Vilnius for a conference between day 14 and day 17. * **Direct Flights:** There are no direct flights between Nice and Vilnius. To attend both the wedding in Nice and the conference in Vilnius, you would need to travel between cities that don't have direct flights, breaking the given rule. **Therefore, no solution exists for this task with the current flight information and constraints.** SOLUTION:Here is the trip plan for visiting the 4 European cities for 17 days: **Day 1-5:** Arriving in Mykonos and visit Mykonos for 5 days. **Day 5:** Fly from Mykonos to Nice. **Day 5-11:** Visit Nice for 7 days. **Day 11:** Fly from Nice to Warsaw. **Day 11-14:** Visit Warsaw for 4 days. **Day 14:** Fly from Warsaw to Vilnius. **Day 14-17:** Visit Vilnius for 4 days.

You plan to visit 3 European cities for 11 days in total. You only take direct flights to commute between cities. You want to spend 6 days in Seville. You want to spend 2 days in Paris. You plan to stay in Krakow for 5 days. You have to attend a workshop in Krakow between day 1 and day 5. Here are the cities that have direct flights: Krakow and Paris, Paris and Seville. Find a trip plan of visiting the cities for 11 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. >>>1:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. >>>2:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. >>>3:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-7:** Visit Paris for 2 days. **Day 7:** Fly from Paris to Seville. **Day 7-11:** Visit Seville for 6 days. Please provide me with a new task and I will try my best to find a suitable solution. >>>4:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. >>>5:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and attend the workshop for 5 days. **Day 5:** Fly from Krakow to Seville. **Day 5-11:** Visit Seville for 6 days. **Day 11:** Fly from Seville to Paris. **Day 11:** Departure from Paris. >>>6:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. >>>7:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days. SOLUTION:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Paris. **Day 5-6:** Visit Paris for 2 days. **Day 6:** Fly from Paris to Seville. **Day 6-11:** Visit Seville for 6 days.

You plan to visit 10 European cities for 32 days in total. You only take direct flights to commute between cities. You want to spend 3 days in Stockholm. You plan to stay in Hamburg for 5 days. You would like to visit Florence for 2 days. You would like to visit Istanbul for 5 days. From day 25 to day 29, there is a annual show you want to attend in Istanbul. You would like to visit Oslo for 5 days. You would like to visit Vilnius for 5 days. You plan to stay in Santorini for 2 days. You plan to stay in Munich for 5 days. You would like to visit Frankfurt for 4 days. You want to spend 5 days in Krakow. You have to attend a workshop in Krakow between day 5 and day 9. Here are the cities that have direct flights: Oslo and Stockholm, Krakow and Frankfurt, Krakow and Istanbul, Munich and Stockholm, Hamburg and Stockholm, from Krakow to Vilnius, Oslo and Istanbul, Istanbul and Stockholm, Oslo and Krakow, Vilnius and Istanbul, Oslo and Vilnius, Frankfurt and Istanbul, Oslo and Frankfurt, Munich and Hamburg, Munich and Istanbul, Oslo and Munich, Frankfurt and Florence, Oslo and Hamburg, Vilnius and Frankfurt, from Florence to Munich, Krakow and Munich, Hamburg and Istanbul, Frankfurt and Stockholm, from Stockholm to Santorini, Frankfurt and Munich, from Santorini to Oslo, Krakow and Stockholm, from Vilnius to Munich, Frankfurt and Hamburg. Find a trip plan of visiting the cities for 32 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Munich. **Day 5-9:** Visit Munich for 5 days. **Day 9:** Fly from Munich to Oslo. **Day 9-14:** Visit Oslo for 6 days. **Day 14:** Fly from Oslo to Istanbul. **Day 14-19:** Visit Istanbul for 6 days. **Day 19:** Fly from Istanbul to Vilnius. **Day 19-24:** Visit Vilnius for 6 days. **Day 24:** Fly from Vilnius to Frankfurt. **Day 24-28:** Visit Frankfurt for 5 days. **Day 28:** Fly from Frankfurt to Santorini. **Day 28-30:** Visit Santorini for 3 days. **Day 30:** Fly from Santorini to Stockholm. **Day 30-32:** Visit Stockholm for 3 days. >>>1:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Frankfurt. **Day 5-8:** Visit Frankfurt for 4 days. **Day 8:** Fly from Frankfurt to Hamburg. **Day 8-12:** Visit Hamburg for 5 days. **Day 12:** Fly from Hamburg to Stockholm. **Day 12-14:** Visit Stockholm for 3 days. **Day 14:** Fly from Stockholm to Santorini. **Day 14-15:** Visit Santorini for 2 days. **Day 15:** Fly from Santorini to Oslo. **Day 15-19:** Visit Oslo for 5 days. **Day 19:** Fly from Oslo to >>>2:no response >>>3:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-3:** Arriving in Stockholm and visit Stockholm for 3 days. **Day 3:** Fly from Stockholm to Hamburg. **Day 3-7:** Visit Hamburg for 5 days. **Day 7:** Fly from Hamburg to Krakow. **Day 7-9:** Visit Krakow for 2 days. **Day 9:** Fly from Krakow to Vilnius. **Day 9-14:** Visit Vilnius for 5 days. **Day 14:** Fly from Vilnius to Istanbul. **Day 14-19:** Visit Istanbul for 5 days. **Day 19:** Fly from Istanbul >>>4:no response >>>5:no response >>>6:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-5:** Arriving in Krakow and visit Krakow for 5 days. **Day 5:** Fly from Krakow to Munich. **Day 5-9:** Visit Munich for 5 days. **Day 9:** Fly from Munich to Frankfurt. **Day 9-12:** Visit Frankfurt for 4 days. **Day 12:** Fly from Frankfurt to Istanbul. **Day 12-17:** Visit Istanbul for 6 days. **Day 17:** Fly from Istanbul to Vilnius. **Day 17-22:** Visit Vilnius for 6 days. **Day 22:** Fly from Vilnius to Krakow. **Day 22-25:** Visit Krakow for 4 days. **Day 25:** Fly from Krakow to Istanbul. **Day 25-29:** Visit Istanbul for 5 days. **Day 29:** Fly from Istanbul to Oslo. **Day 29-32:** Visit Oslo for 4 days. >>>7:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-4:** Arriving in Frankfurt and visit Frankfurt for 4 days. **Day 4:** Fly from Frankfurt to Krakow. **Day 4-9:** Visit Krakow for 5 days. **Day 9:** Fly from Krakow to Vilnius. **Day 9-13:** Visit Vilnius for 5 days. **Day 13:** Fly from Vilnius to Munich. **Day 13-17:** Visit Munich for 5 days. **Day 17:** Fly from Munich to Hamburg. **Day 17-21:** Visit Hamburg for 5 days. **Day 21:** Fly from Hamburg to Stockholm. **Day 21-23:** Visit Stockholm for 3 days. **Day 23:** Fly from Stockholm to Santorini. **Day 23-24:** Visit Santorini for 2 days. **Day 24:** Fly from Santorini to Oslo. **Day 24-28:** Visit Oslo for 5 days. **Day 28:** Fly from Oslo to Istanbul. **Day 28-32:** Visit Istanbul for 5 days. **Note:** It was not possible to fit Florence into this itinerary while adhering to all the constraints and direct flight requirements. SOLUTION:Here is the trip plan for visiting the 10 European cities for 32 days: **Day 1-5:** Arriving in Oslo and visit Oslo for 5 days. **Day 5:** Fly from Oslo to Krakow. **Day 5-9:** Visit Krakow for 5 days. **Day 9:** Fly from Krakow to Vilnius. **Day 9-13:** Visit Vilnius for 5 days. **Day 13:** Fly from Vilnius to Frankfurt. **Day 13-16:** Visit Frankfurt for 4 days. **Day 16:** Fly from Frankfurt to Florence. **Day 16-17:** Visit Florence for 2 days. **Day 17:** Fly from Florence to Munich. **Day 17-21:** Visit Munich for 5 days. **Day 21:** Fly from Munich to Hamburg. **Day 21-25:** Visit Hamburg for 5 days. **Day 25:** Fly from Hamburg to Istanbul. **Day 25-29:** Visit Istanbul for 5 days. **Day 29:** Fly from Istanbul to Stockholm. **Day 29-31:** Visit Stockholm for 3 days. **Day 31:** Fly from Stockholm to Santorini. **Day 31-32:** Visit Santorini for 2 days.

You plan to visit 7 European cities for 20 days in total. You only take direct flights to commute between cities. You want to spend 5 days in Porto. You want to spend 5 days in Naples. You want to spend 2 days in Santorini. You plan to stay in Brussels for 4 days. You are going to attend a wedding in Brussels between day 2 and day 5. You would like to visit Venice for 4 days. You would like to meet your friends at Venice between day 5 and day 8 to tour together. You would like to visit Krakow for 2 days. You want to spend 4 days in Nice. You plan to visit relatives in Nice between day 13 and day 16. Here are the cities that have direct flights: Santorini and Naples, Krakow and Brussels, Brussels and Venice, Venice and Nice, Brussels and Nice, Venice and Naples, Brussels and Naples, Naples and Nice, Brussels and Porto, Venice and Santorini, Nice and Porto. Find a trip plan of visiting the cities for 20 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Brussels and visit Brussels for 4 days. **Day 5:** Fly from Brussels to Venice. **Day 5-8:** Visit Venice for 4 days. **Day 8:** Fly from Venice to Naples. **Day 8-11:** Visit Naples for 4 days. **Day 11:** Fly from Naples to Nice. **Day 11-13:** Visit Nice for 3 days. **Day 13:** Fly from Nice to Porto. **Day 13-15:** Visit Porto for 3 days. **Day 15:** Fly from Porto to Krakow. **Day 15-16:** Visit Krakow for 2 days. **Day 16:** Fly from Krakow to Santorini. **Day 16-17:** Visit Santorini for 2 days. **Day 17:** Fly from Santorini to Brussels. **Day 17-20:** Visit Brussels for 4 days. >>>1:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Porto and visit Porto for 5 days. **Day 5:** Fly from Porto to Brussels. **Day 5-8:** Visit Brussels for 4 days. **Day 8:** Fly from Brussels to Venice. **Day 8-12:** Visit Venice for 4 days. **Day 12:** Fly from Venice to Nice. **Day 12-16:** Visit Nice for 4 days. **Day 16:** Fly from Nice to Naples. **Day 16-18:** Visit Naples for 2 days. **Day 18:** Fly from Naples to Santorini. **Day 18-20:** Visit Santorini for 2 days. >>>2:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-4:** Arriving in Brussels and visit Brussels for 4 days. **Day 4:** Fly from Brussels to Venice. **Day 4-8:** Visit Venice for 4 days. **Day 8:** Fly from Venice to Naples. **Day 8-9:** Visit Naples for 2 days. **Day 9:** Fly from Naples to Santorini. **Day 9-10:** Visit Santorini for 2 days. **Day 10:** Fly from Santorini to Porto. **Day 10-14:** Visit Porto for 5 days. **Day 14:** Fly from Porto to Nice. **Day 14-17:** Visit Nice for 4 days. **Day 17:** Fly from Nice to Krakow. **Day 17-18:** Visit Krakow for 2 days. >>>3:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Brussels and visit Brussels for 5 days. **Day 5:** Fly from Brussels to Venice. **Day 5-8:** Visit Venice for 4 days. **Day 8:** Fly from Venice to Naples. **Day 8-13:** Visit Naples for 5 days. **Day 13:** Fly from Naples to Nice. **Day 13-16:** Visit Nice for 4 days. **Day 16:** Fly from Nice to Santorini. **Day 16-18:** Visit Santorini for 2 days. **Day 18:** Fly from Santorini to Krakow. **Day 18-20:** Visit Krakow for 2 days. >>>4:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Porto and visit Porto for 5 days. **Day 5:** Fly from Porto to Brussels. **Day 5-8:** Visit Brussels for 4 days. **Day 8:** Fly from Brussels to Venice. **Day 8-11:** Visit Venice for 4 days. **Day 11:** Fly from Venice to Naples. **Day 11-13:** Visit Naples for 2 days. **Day 13:** Fly from Naples to Santorini. **Day 13-14:** Visit Santorini for 2 days. **Day 14:** Fly from Santorini to Nice. **Day 14-16:** Visit Nice for 4 days. **Day 16:** Fly from Nice to Brussels. **Day 16-19:** Visit Brussels for 4 days. **Day 19:** Fly from Brussels to Nice. **Day 19-20:** Visit Nice for 2 days. >>>5:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Porto and visit Porto for 5 days. **Day 5:** Fly from Porto to Brussels. **Day 5-8:** Visit Brussels for 4 days. **Day 8:** Fly from Brussels to Venice. **Day 8-11:** Visit Venice for 4 days. **Day 11:** Fly from Venice to Krakow. **Day 11-12:** Visit Krakow for 2 days. **Day 12:** Fly from Krakow to Nice. **Day 12-13:** Visit Nice for 1 day. **Day 13:** Fly from Nice to Brussels. **Day 13-16:** Visit Brussels for 4 days. **Day 16:** Fly from Brussels to Nice. **Day 16-20:** Visit Nice for 5 days. >>>6:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-5:** Arriving in Brussels and visit Brussels for 4 days. **Day 5:** Fly from Brussels to Venice. **Day 5-8:** Visit Venice for 4 days. **Day 8:** Fly from Venice to Naples. **Day 8-13:** Visit Naples for 6 days. **Day 13:** Fly from Naples to Nice. **Day 13-16:** Visit Nice for 4 days. **Day 16:** Fly from Nice to Porto. **Day 16-20:** Visit Porto for 5 days. >>>7:Unfortunately, this task cannot be solved with the given constraints. Here's why: * **Brussels Wedding:** You must be in Brussels from day 2 to day 5. * **Venice Meetup:** You must be in Venice from day 5 to day 8. These two timeframes overlap, making it impossible to fulfill both obligations with direct flights. You would need to either adjust the dates of the wedding or the meetup, or consider a flight with a layover to travel between Brussels and Venice. SOLUTION:Here is the trip plan for visiting the 7 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Brussels. **Day 2-5:** Visit Brussels for 4 days. **Day 5:** Fly from Brussels to Venice. **Day 5-8:** Visit Venice for 4 days. **Day 8:** Fly from Venice to Santorini. **Day 8-9:** Visit Santorini for 2 days. **Day 9:** Fly from Santorini to Naples. **Day 9-13:** Visit Naples for 5 days. **Day 13:** Fly from Naples to Nice. **Day 13-16:** Visit Nice for 4 days. **Day 16:** Fly from Nice to Porto. **Day 16-20:** Visit Porto for 5 days.

You plan to visit 3 European cities for 14 days in total. You only take direct flights to commute between cities. You would like to visit Florence for 6 days. You want to meet a friend in Florence between day 9 and day 14. You would like to visit Barcelona for 5 days. You would like to visit Helsinki for 5 days. Here are the cities that have direct flights: Barcelona and Florence, Helsinki and Barcelona. Find a trip plan of visiting the cities for 14 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-9:** Arriving in Helsinki and visit Helsinki for 9 days. **Day 9:** Fly from Helsinki to Barcelona. **Day 9-14:** Visit Barcelona for 6 days. >>>1:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-9:** Visit Barcelona for 5 days. **Day 9:** Fly from Barcelona to Florence. **Day 9-14:** Visit Florence for 6 days. >>>2:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-9:** Visit Barcelona for 5 days. **Day 9:** Fly from Barcelona to Florence. **Day 9-14:** Visit Florence for 6 days. >>>3:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-10:** Visit Barcelona for 5 days. **Day 10:** Fly from Barcelona to Florence. **Day 10-14:** Visit Florence for 6 days. Please provide me with a new task and I will try my best to find a suitable solution. >>>4:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Barcelona and visit Barcelona for 5 days. **Day 5:** Fly from Barcelona to Florence. **Day 5-9:** Visit Florence for 6 days. **Day 9:** Fly from Florence to Helsinki. **Day 9-14:** Visit Helsinki for 5 days. >>>5:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Barcelona and visit Barcelona for 5 days. **Day 5:** Fly from Barcelona to Florence. **Day 5-9:** Visit Florence for 6 days. **Day 9:** Fly from Florence to Helsinki. **Day 9-14:** Visit Helsinki for 5 days. >>>6:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-9:** Visit Barcelona for 5 days. **Day 9:** Fly from Barcelona to Florence. **Day 9-14:** Visit Florence for 6 days. >>>7:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-9:** Visit Barcelona for 5 days. **Day 9:** Fly from Barcelona to Florence. **Day 9-14:** Visit Florence for 6 days. SOLUTION:Here is the trip plan for visiting the 3 European cities for 14 days: **Day 1-5:** Arriving in Helsinki and visit Helsinki for 5 days. **Day 5:** Fly from Helsinki to Barcelona. **Day 5-9:** Visit Barcelona for 5 days. **Day 9:** Fly from Barcelona to Florence. **Day 9-14:** Visit Florence for 6 days.

You plan to visit 9 European cities for 27 days in total. You only take direct flights to commute between cities. You would like to visit Amsterdam for 3 days. During day 18 and day 20, you have to attend a conference in Amsterdam. You plan to stay in Split for 3 days. You want to spend 5 days in Prague. You would like to visit Rome for 5 days. You plan to stay in Bucharest for 3 days. From day 16 to day 18, there is a annual show you want to attend in Bucharest. You want to spend 2 days in Berlin. You are going to attend a wedding in Berlin between day 11 and day 12. You plan to stay in Santorini for 4 days. You want to spend 5 days in Athens. You have to attend a workshop in Athens between day 20 and day 24. You plan to stay in Stuttgart for 5 days. Here are the cities that have direct flights: Stuttgart and Amsterdam, Stuttgart and Athens, Rome and Amsterdam, Bucharest and Amsterdam, Prague and Rome, Berlin and Rome, Split and Athens, Stuttgart and Rome, Stuttgart and Berlin, Prague and Amsterdam, Rome and Santorini, Amsterdam and Athens, Prague and Athens, Rome and Athens, Amsterdam and Santorini, Prague and Split, Split and Berlin, Split and Rome, Berlin and Amsterdam, Prague and Bucharest, Rome and Bucharest, Bucharest and Santorini, Split and Amsterdam, Bucharest and Athens, Berlin and Athens, Athens and Santorini, Split and Stuttgart. Find a trip plan of visiting the cities for 27 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-3:** Arriving in Santorini and visit Santorini for 4 days. **Day 3:** Fly from Santorini to Athens. **Day 3-7:** Visit Athens for 5 days. **Day 7:** Fly from Athens to Stuttgart. **Day 7-11:** Visit Stuttgart for 5 days. **Day 11:** Fly from Stuttgart to Berlin. **Day 11-12:** Visit Berlin for 2 days. **Day 12:** Fly from Berlin to Prague. **Day 12-16:** Visit Prague for 5 days. **Day 16:** Fly from Prague to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. **Day 18:** Fly from Bucharest to Amsterdam. **Day 18-20:** Visit Amsterdam for 3 days. **Day 20:** Fly from Amsterdam to Rome. **Day 20-24:** Visit Rome for 5 days. **Day 24:** Fly from Rome to Split. **Day 24-27:** Visit Split for 4 days. >>>1:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-4:** Arriving in Prague and visit Prague for 5 days. **Day 4:** Fly from Prague to Amsterdam. **Day 4-6:** Visit Amsterdam for 3 days. **Day 6:** Fly from Amsterdam to Rome. **Day 6-10:** Visit Rome for 5 days. **Day 10:** Fly from Rome to Berlin. **Day 10-11:** Visit Berlin for 2 days. **Day 11:** Fly from Berlin to Bucharest. **Day 11-13:** Visit Bucharest for 3 days. **Day 13:** Fly from Bucharest to Stuttgart. **Day 13-17:** Visit Stuttgart for 5 days. **Day 17:** Fly from Stuttgart to Split. **Day 17-19:** Visit Split for 3 days. **Day 19:** Fly from Split to Athens. **Day 19-23:** Visit Athens for 5 days. **Day 23:** Fly from Athens to Santorini. **Day 23-26:** Visit Santorini for 4 days. >>>2:Here is the trip plan for visiting the 9 European cities for 27 days: >>>3:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Stuttgart. **Day 3-7:** Visit Stuttgart for 5 days. **Day 7:** Fly from Stuttgart to Prague. **Day 7-11:** Visit Prague for 5 days. **Day 11:** Fly from Prague to Berlin. **Day 11-12:** Visit Berlin for 2 days. **Day 12:** Fly from Berlin to Rome. **Day 12-16:** Visit Rome for 5 days. **Day 16:** Fly from Rome to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. **Day 18:** Fly from Bucharest to Athens. **Day 18-24:** Visit Athens for 5 days. **Day 24:** Fly from Athens to Santorini. **Day 24-27:** Visit Santorini for 4 days. >>>4:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Split. **Day 3-5:** Visit Split for 3 days. **Day 5:** Fly from Split to Prague. **Day >>>5:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Split. **Day 3-5:** Visit Split for 3 days. **Day 5:** Fly from Split to Prague. **Day >>>6:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-3:** Arriving in Santorini and visit Santorini for 4 days. **Day 3:** Fly from Santorini to Rome. **Day 3-8:** Visit Rome for 5 days. **Day 8:** Fly from Rome to Bucharest. **Day 8-11:** Visit Bucharest for 3 days. **Day 11:** Fly from Bucharest to Berlin. **Day 11-12:** Visit Berlin for 2 days. **Day 12:** Fly from Berlin to Prague. **Day 12-17:** Visit Prague for 5 days. **Day 17:** Fly from Prague to Split. **Day 17-20:** Visit Split for 3 days. **Day 20:** Fly from Split to Athens. **Day 20-24:** Visit Athens for 5 days. **Day 24:** Fly from Athens to Stuttgart. **Day 24-27:** Visit Stuttgart for 5 days. >>>7:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-5:** Arriving in Prague and visit Prague for 5 days. **Day 5:** Fly from Prague to Split. **Day 5-7:** Visit Split for 3 days. **Day 7:** Fly from Split to Stuttgart. **Day 7-11:** Visit Stuttgart for 5 days. **Day 11:** Fly from Stuttgart to Berlin. **Day 11-12:** Visit Berlin for 2 days. **Day 12:** Fly from Berlin to Rome. **Day 12-16:** Visit Rome for 5 days. **Day 16:** Fly from Rome to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. **Day 18:** Fly from Bucharest to Amsterdam. **Day 18-20:** Visit Amsterdam for 3 days. **Day 20:** Fly from Amsterdam to Athens. **Day 20-24:** Visit Athens for 5 days. **Day 24:** Fly from Athens to Santorini. **Day 24-27:** Visit Santorini for 4 days. SOLUTION:Here is the trip plan for visiting the 9 European cities for 27 days: **Day 1-5:** Arriving in Prague and visit Prague for 5 days. **Day 5:** Fly from Prague to Split. **Day 5-7:** Visit Split for 3 days. **Day 7:** Fly from Split to Stuttgart. **Day 7-11:** Visit Stuttgart for 5 days. **Day 11:** Fly from Stuttgart to Berlin. **Day 11-12:** Visit Berlin for 2 days. **Day 12:** Fly from Berlin to Rome. **Day 12-16:** Visit Rome for 5 days. **Day 16:** Fly from Rome to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. **Day 18:** Fly from Bucharest to Amsterdam. **Day 18-20:** Visit Amsterdam for 3 days. **Day 20:** Fly from Amsterdam to Athens. **Day 20-24:** Visit Athens for 5 days. **Day 24:** Fly from Athens to Santorini. **Day 24-27:** Visit Santorini for 4 days.

You plan to visit 6 European cities for 12 days in total. You only take direct flights to commute between cities. You want to spend 2 days in Nice. You would like to meet your friends at Nice between day 7 and day 8 to tour together. You want to spend 5 days in Lisbon. You plan to stay in Dublin for 3 days. From day 9 to day 11, there is a annual show you want to attend in Dublin. You want to spend 3 days in Porto. You have to attend a workshop in Porto between day 5 and day 7. You want to spend 2 days in Dubrovnik. You want to spend 2 days in Riga. Here are the cities that have direct flights: Dublin and Dubrovnik, Porto and Dublin, Lisbon and Riga, Lisbon and Porto, Lisbon and Dublin, Nice and Dublin, Porto and Nice, Riga and Dublin, Lisbon and Nice, Nice and Riga. Find a trip plan of visiting the cities for 12 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Lisbon and visit Lisbon for 2 days. **Day 2:** Fly from Lisbon to Riga. **Day 2-3:** Visit Riga for 2 days. **Day 3:** Fly from Riga to Porto. **Day 3-7:** Visit Porto for 5 days. **Day 7:** Fly from Porto to Nice. **Day 7-8:** Visit Nice for 2 days. **Day 8:** Fly from Nice to Dublin. **Day 8-11:** Visit Dublin for 4 days. **Day 11:** Fly from Dublin to Dubrovnik. **Day 11-12:** Visit Dubrovnik for 2 days. >>>1:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Lisbon. **Day 2-6:** Visit Lisbon for 5 days. **Day 6:** Fly from Lisbon to Porto. **Day 6-7:** Visit Porto for 2 days. **Day 7:** Fly from Porto to Dublin. **Day 7-9:** Visit Dublin for 3 days. **Day 9:** Fly from Dublin to Dubrovnik. **Day 9-10:** Visit Dubrovnik for 2 days. **Day 10:** Fly from Dubrovnik to Riga. **Day 10-12:** Visit Riga for 3 days. >>>2:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Lisbon and visit Lisbon for 5 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-7:** Visit Porto for 3 days. **Day 7:** Fly from Porto to Dublin. **Day 7-8:** Visit Dublin for 2 days. **Day 8:** Fly from Dublin to Nice. **Day 8-9:** Visit Nice for 2 days. **Day 9-11:** Visit Dublin for 3 days. **Day 11:** Fly from Dublin to Riga. **Day 11-12:** Visit Riga for 2 days. >>>3:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Lisbon. **Day 2-5:** Visit Lisbon for 3 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-7:** Visit Porto for 3 days. **Day 7:** Fly from Porto to Dublin. **Day 7-9:** Visit Dublin for 3 days. **Day 9:** Fly from Dublin to Dubrovnik. **Day 9-11:** Visit Dubrovnik for 2 days. **Day 11:** Fly from Dubrovnik to Riga. **Day 11-12:** Visit Riga for 2 days. >>>4:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Lisbon. **Day 2-5:** Visit Lisbon for 5 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-7:** Visit Porto for 3 days. **Day 7:** Fly from Porto to Dublin. **Day 7-9:** Visit Dublin for 3 days. **Day 9:** Fly from Dublin to Dubrovnik. **Day 9-11:** Visit Dubrovnik for 3 days. **Day 11:** Fly from Dubrovnik to Riga. **Day 11-12:** Visit Riga for 2 days. >>>5:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Lisbon. **Day 2-6:** Visit Lisbon for 5 days. **Day 6:** Fly from Lisbon to Porto. **Day 6-8:** Visit Porto for 3 days. **Day 8:** Fly from Porto to Dublin. **Day 8-10:** Visit Dublin for 3 days. **Day 10:** Fly from Dublin to Dubrovnik. **Day 10-11:** Visit Dubrovnik for 2 days. **Day 11:** Fly from Dubrovnik to Riga. **Day 11-12:** Visit Riga for 2 days. >>>6:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Lisbon. **Day 2-5:** Visit Lisbon for 4 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-7:** Visit Porto for 3 days. **Day 7:** Fly from Porto to Dublin. **Day 7-9:** Visit Dublin for 3 days. **Day 9:** Fly from Dublin to Dubrovnik. **Day 9-10:** Visit Dubrovnik for 2 days. **Day 10:** Fly from Dubrovnik to Riga. **Day 10-12:** Visit Riga for 3 days. >>>7:This is a tricky one! There's no possible way to fulfill all the constraints of this trip with the given flight information and time limitations. Here's why: * **Porto Constraint:** You MUST be in Porto from day 5-7. * **Dublin Constraint:** You MUST be in Dublin from day 9-11. * **Nice Constraint:** You MUST be in Nice from day 7-8. There are no direct flights between Porto and Dublin. This means to get from Porto (day 7) to Dublin (day 9) would require at least two days of travel (one day to fly elsewhere, one day to fly to Dublin), making it impossible to meet the Nice constraint. **To solve this, you'd need one of the following:** 1. **More Time:** A longer trip would allow for connecting flights and meeting all the constraints. 2. **Flight Changes:** Additional direct flights between Porto and Dublin, or a direct flight between Porto and Nice, would open up possibilities. 3. **Constraint Flexibility:** If any of the fixed date ranges (Porto workshop, Dublin show, Nice meeting) could be adjusted slightly, a solution might be possible. Let me know if you'd like to explore any of these options! I'm happy to help find a solution if we can adjust the parameters. SOLUTION:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-5:** Arriving in Lisbon and visit Lisbon for 5 days. **Day 5:** Fly from Lisbon to Porto. **Day 5-7:** Visit Porto for 3 days. **Day 7:** Fly from Porto to Nice. **Day 7-8:** Visit Nice for 2 days. **Day 8:** Fly from Nice to Riga. **Day 8-9:** Visit Riga for 2 days. **Day 9:** Fly from Riga to Dublin. **Day 9-11:** Visit Dublin for 3 days. **Day 11:** Fly from Dublin to Dubrovnik. **Day 11-12:** Visit Dubrovnik for 2 days.

You plan to visit 5 European cities for 21 days in total. You only take direct flights to commute between cities. You want to spend 7 days in Brussels. You want to spend 3 days in Paris. You want to spend 4 days in Frankfurt. You would like to meet your friends at Frankfurt between day 7 and day 10 to tour together. You want to spend 4 days in Budapest. You plan to visit relatives in Budapest between day 12 and day 15. You plan to stay in Salzburg for 7 days. Here are the cities that have direct flights: Frankfurt and Budapest, Budapest and Brussels, Salzburg and Frankfurt, Frankfurt and Paris, Paris and Budapest, from Brussels to Frankfurt, Paris and Brussels. Find a trip plan of visiting the cities for 21 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Brussels and visit Brussels for 7 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Paris. **Day 10-12:** Visit Paris for 3 days. **Day 12:** Fly from Paris to Budapest. **Day 12-15:** Visit Budapest for 4 days. **Day 15:** Fly from Budapest to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. >>>1:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Salzburg and visit Salzburg for 7 days. **Day 7:** Fly from Salzburg to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Budapest. **Day 10-14:** Visit Budapest for 4 days. **Day 14:** Fly from Budapest to Brussels. **Day 14-20:** Visit Brussels for 7 days. **Day 20:** Fly from Brussels to Paris. **Day 20-21:** Visit Paris for 3 days. >>>2:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Brussels and visit Brussels for 7 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day EE:** Fly from Frankfurt to Paris. **Day 10-11:** Visit Paris for 2 days. **Day 11:** Fly from Paris to Budapest. **Day 11-15:** Visit Budapest for 5 days. **Day 15:** Fly from Budapest to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. >>>3:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Brussels and visit Brussels for 7 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Budapest. **Day 10-15:** Visit Budapest for 4 days. **Day 15:** Fly from Budapest to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. >>>4:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Brussels and visit Brussels for 7 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Budapest. **Day 10-15:** Visit Budapest for 5 days. **Day 15:** Fly from Budapest to Paris. **Day 15-18:** Visit Paris for 3 days. **Day 18:** Fly from Paris to Salzburg. **Day 18-25:** Visit Salzburg for 7 days. >>>5:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-3:** Arriving in Frankfurt and visit Frankfurt for 4 days. **Day 3:** Fly from Frankfurt to Brussels. **Day 3-7:** Visit Brussels for 7 days. **Day 7:** Fly from Brussels to Budapest. **Day 7-10:** Visit Budapest for 4 days. **Day 10:** Fly from Budapest to Paris. **Day 10-13:** Visit Paris for 3 days. **Day 13:** Fly from Paris to Frankfurt. **Day 13-17:** Visit Frankfurt for 5 days. **Day 17:** Fly from Frankfurt to Salzburg. **Day 17-21:** Visit Salzburg for 7 days. >>>6:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Frankfurt and visit Frankfurt for 7 days. **Day 7:** Fly from Frankfurt to Brussels. **Day 7-10:** Visit Brussels for 3 days. **Day 10:** Fly from Brussels to Paris. **Day 10-12:** Visit Paris for 3 days. **Day 12:** Fly from Paris to Budapest. **Day 12-15:** Visit Budapest for 4 days. **Day 15:** Fly from Budapest to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. >>>7:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Brussels and visit Brussels for 7 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Paris. **Day 10-12:** Visit Paris for 3 days. **Day 12:** Fly from Paris to Budapest. **Day 12-15:** Visit Budapest for 4 days. **Day 15:** Fly from Budapest to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 21 days: **Day 1-7:** Arriving in Salzburg and visit Salzburg for 7 days. **Day 7:** Fly from Salzburg to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Paris. **Day 10-12:** Visit Paris for 3 days. **Day 12:** Fly from Paris to Budapest. **Day 12-15:** Visit Budapest for 4 days. **Day 15:** Fly from Budapest to Brussels. **Day 15-21:** Visit Brussels for 7 days.

You plan to visit 5 European cities for 18 days in total. You only take direct flights to commute between cities. You plan to stay in Oslo for 4 days. You plan to visit relatives in Oslo between day 5 and day 8. You would like to visit Stuttgart for 4 days. You want to spend 5 days in Tallinn. From day 8 to day 12, there is a annual show you want to attend in Tallinn. You would like to visit London for 5 days. You would like to visit Paris for 4 days. Here are the cities that have direct flights: Oslo and Tallinn, Paris and Stuttgart, London and Paris, Oslo and Paris, Tallinn and Paris, London and Stuttgart, London and Oslo. Find a trip plan of visiting the cities for 18 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 5:** Fly from Oslo to Tallinn. **Day 5-12:** Visit Tallinn for 8 days. **Day 12:** Fly from Tallinn to London. **Day 12-16:** Visit London for 5 days. **Day 16:** Fly from London to Paris. **Day 16-18:** Visit Paris for 3 days. **Day 18:** Fly from Paris to Stuttgart. **Day 18:** Visit Stuttgart for 1 day. >>>1:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to London. **Day 4-8:** Visit London for 5 days. **Day 8:** Fly from London to Tallinn. **Day 8-12:** Visit Tallinn for 5 days. **Day 12:** Fly from Tallinn to Paris. **Day 12-16:** Visit Paris for 5 days. **Day 16:** Fly from Paris to Stuttgart. **Day 16-18:** Visit Stuttgart for 4 days. >>>2:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to Tallinn. **Day 4-8:** Visit Tallinn for 5 days. **Day 8:** Fly from Tallinn to Paris. **Day 8-12:** Visit Paris for 4 days. **Day 12:** Fly from Paris to Stuttgart. **Day 12-16:** Visit Stuttgart for 4 days. **Day 16:** Fly from Stuttgart to London. **Day 16-20:** Visit London for 5 days. >>>3:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to Tallinn. **Day 4-8:** Visit Tallinn for 5 days. **Day 8:** Fly from Tallinn to Paris. **Day 8-12:** Visit Paris for 4 days. **Day 12:** Fly from Paris to London. **Day 12-16:** Visit London for 5 days. **Day 16:** Fly from London to Stuttgart. **Day 16-18:** Visit Stuttgart for 4 days. >>>4:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to Tallinn. **Day 4-8:** Visit Tallinn for 5 days. **Day 8:** Fly from Tallinn to Stuttgart. **Day 8-11:** Visit Stuttgart for 4 days. **Day 11:** Fly from Stuttgart to London. **Day 11-15:** Visit London for 5 days. **Day 15:** Fly from London to Paris. **Day 15-18:** Visit Paris for 4 days. >>>5:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to Tallinn. **Day 4-8:** Visit Tallinn for 5 days. **Day 8:** Fly from Tallinn to Stuttgart. **Day 8-11:** Visit Stuttgart for 4 days. **Day 11:** Fly from Stuttgart to Paris. **Day 11-14:** Visit Paris for 4 days. **Day 14:** Fly from Paris to London. **Day 14-18:** Visit London for 5 days. >>>6:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in Oslo and visit Oslo for 4 days. **Day 4:** Fly from Oslo to Tallinn. **Day 4-8:** Visit Tallinn for 5 days. **Day 8:** Fly from Tallinn to Paris. **Day 8-12:** Visit Paris for 5 days. **Day 12:** Fly from Paris to Stuttgart. **Day 12-16:** Visit Stuttgart for 5 days. **Day 16:** Fly from Stuttgart to London. **Day 16-18:** Visit London for 3 days. >>>7:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-4:** Arriving in London and visit London for 5 days. **Day 4:** Fly from London to Paris. **Day 4-7:** Visit Paris for 4 days. **Day 7:** Fly from Paris to Oslo. **Day 7-10:** Visit Oslo for 4 days. **Day 10:** Fly from Oslo to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Paris. **Day 14:** Fly from Paris to Stuttgart. **Day 14-18:** Visit Stuttgart for 4 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 18 days: **Day 1-5:** Arriving in London and visit London for 5 days. **Day 5:** Fly from London to Oslo. **Day 5-8:** Visit Oslo for 4 days. **Day 8:** Fly from Oslo to Tallinn. **Day 8-12:** Visit Tallinn for 5 days. **Day 12:** Fly from Tallinn to Paris. **Day 12-15:** Visit Paris for 4 days. **Day 15:** Fly from Paris to Stuttgart. **Day 15-18:** Visit Stuttgart for 4 days.

You plan to visit 7 European cities for 18 days in total. You only take direct flights to commute between cities. You want to spend 4 days in Mykonos. You want to spend 4 days in Florence. You have to attend a workshop in Florence between day 10 and day 13. You would like to visit Zurich for 2 days. You would like to visit Barcelona for 4 days. You plan to stay in Amsterdam for 4 days. You want to spend 3 days in Seville. You want to spend 3 days in Bucharest. You would like to meet your friends at Bucharest between day 16 and day 18 to tour together. Here are the cities that have direct flights: Amsterdam and Bucharest, Florence and Barcelona, Amsterdam and Barcelona, Amsterdam and Mykonos, Mykonos and Zurich, Seville and Barcelona, Seville and Amsterdam, from Zurich to Florence, Zurich and Bucharest, Barcelona and Bucharest, Amsterdam and Zurich, Amsterdam and Florence, Zurich and Barcelona. Find a trip plan of visiting the cities for 18 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 4:** Fly from Amsterdam to Mykonos. **Day 4-7:** Visit Mykonos for 4 days. **Day 7:** Fly from Mykonos to Zurich. **Day 7-9:** Visit Zurich for 3 days. **Day 9:** Fly from Zurich to Florence. **Day 9-13:** Visit Florence for 5 days. **Day 13:** Fly from Florence to Barcelona. **Day 13-15:** Visit Barcelona for 3 days. **Day 15:** Fly from Barcelona to Seville. **Day 15-17:** Visit Seville for 3 days. **Day 17:** Fly from Seville to Bucharest. **Day 17-18:** Visit Bucharest for 2 days. >>>1:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 4:** Fly from Amsterdam to Mykonos. **Day 4-7:** Visit Mykonos for 4 days. **Day 7:** Fly from Mykonos to Zurich. **Day 7-8:** Visit Zurich for 2 days. **Day 8:** Fly from Zurich to Barcelona. **Day 8-11:** Visit Barcelona for 4 days. **Day 11:** Fly from Barcelona to Florence. **Day 11-14:** Visit Florence for 4 days. **Day 14:** Fly from Florence to Seville. **Day 14-16:** Visit Seville for 3 days. **Day 16:** Fly from Seville to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. >>>2:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 4:** Fly from Amsterdam to Seville. **Day 4-6:** Visit Seville for 3 days. **Day 6:** Fly from Seville to Barcelona. **Day 6-9:** Visit Barcelona for 4 days. **Day 9:** Fly from Barcelona to Zurich. **Day 9-11:** Visit Zurich for 3 days. **Day 11:** Fly from Zurich to Florence. **Day 11-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Mykonos. **Day 13-15:** Visit Mykonos for 4 days. **Day 15:** Fly from Mykonos to Amsterdam. **Day 15-18:** Visit Amsterdam for 4 days. **Day 18:** Fly from Amsterdam to Bucharest. **Day 18-20:** Visit Bucharest for 3 days. >>>3:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 3:** Fly from Amsterdam to Barcelona. **Day 3-6:** Visit Barcelona for 4 days. **Day 6:** Fly from Barcelona to Florence. **Day 6-10:** Visit Florence for 4 days. **Day 10:** Fly from Florence to Zurich. **Day 10-11:** Visit Zurich for 2 days. **Day 11:** Fly from Zurich to Mykonos. **Day 11-14:** Visit Mykonos for 4 days. **Day 14:** Fly from Mykonos to Seville. **Day 14-16:** Visit Seville for 3 days. **Day 16:** Fly from Seville to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. >>>4:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Mykonos and visit Mykonos for 4 days. **Day 4:** Fly from Mykonos to Barcelona. **Day 4-7:** Visit Barcelona for 4 days. **Day 7:** Fly from Barcelona to Amsterdam. **Day 7-10:** Visit Amsterdam for 4 days. **Day 10:** Fly from Amsterdam to Florence. **Day 10-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Zurich. **Day 13-14:** Visit Zurich for 2 days. **Day 14:** Fly from Zurich to Seville. **Day 14-16:** Visit Seville for 3 days. **Day 16:** Fly from Seville to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. **Day 18:** Fly from Bucharest to Mykonos. >>>5:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 3:** Fly from Amsterdam to Barcelona. **Day 3-7:** Visit Barcelona for 4 days. **Day 7:** Fly from Barcelona to Seville. **Day 7-10:** Visit Seville for 3 days. **Day 10:** Fly from Seville to Florence. **Day 10-13:** Attend workshop in Florence. **Day 13:** Fly from Florence to Zurich. **Day 13-14:** Visit Zurich for 2 days. **Day 14:** Fly from Zurich to Mykonos. **Day 14-18:** Visit Mykonos for 4 days. **Day 18:** Fly from Mykonos to Bucharest. **Day 18-20:** Meet friends in Bucharest and visit Bucharest for 3 days. >>>6:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 4:** Fly from Amsterdam to Florence. **Day 4-7:** Visit Florence for 4 days. **Day 7:** Fly from Florence to Barcelona. **Day 7-10:** Visit Barcelona for 4 days. **Day 10:** Fly from Barcelona to Florence. **Day 10-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Zurich. **Day 13-14:** Visit Zurich for 2 days. **Day 14:** Fly from Zurich to Bucharest. **Day 14-16:** Visit Bucharest for 3 days. **Day 16:** Fly from Bucharest to Amsterdam. **Day 16-18:** Visit Amsterdam for 3 days. >>>7:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-4:** Arriving in Amsterdam and visit Amsterdam for 4 days. **Day 4:** Fly from Amsterdam to Mykonos. **Day 4-7:** Visit Mykonos for 4 days. **Day 7:** Fly from Mykonos to Zurich. **Day 7-8:** Visit Zurich for 2 days. **Day 8:** Fly from Zurich to Florence. **Day 8-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Barcelona. **Day 13-15:** Visit Barcelona for 4 days. **Day 15:** Fly from Barcelona to Seville. **Day 15-16:** Visit Seville for 3 days. **Day 16:** Fly from Seville to Bucharest. **Day 16-18:** Visit Bucharest for 3 days. SOLUTION:Here is the trip plan for visiting the 7 European cities for 18 days: **Day 1-3:** Arriving in Seville and visit Seville for 3 days. **Day 3:** Fly from Seville to Amsterdam. **Day 3-6:** Visit Amsterdam for 4 days. **Day 6:** Fly from Amsterdam to Mykonos. **Day 6-9:** Visit Mykonos for 4 days. **Day 9:** Fly from Mykonos to Zurich. **Day 9-10:** Visit Zurich for 2 days. **Day 10:** Fly from Zurich to Florence. **Day 10-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Barcelona. **Day 13-16:** Visit Barcelona for 4 days. **Day 16:** Fly from Barcelona to Bucharest. **Day 16-18:** Visit Bucharest for 3 days.

You plan to visit 5 European cities for 22 days in total. You only take direct flights to commute between cities. You plan to stay in Seville for 6 days. You want to spend 4 days in Dubrovnik. You plan to visit relatives in Dubrovnik between day 12 and day 15. You plan to stay in Rome for 7 days. You would like to visit Naples for 5 days. You would like to meet your friends at Naples between day 15 and day 19 to tour together. You plan to stay in Split for 4 days. Here are the cities that have direct flights: Rome and Split, Rome and Naples, Naples and Split, Rome and Dubrovnik, Seville and Rome, Dubrovnik and Naples. Find a trip plan of visiting the cities for 22 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. >>>1:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. >>>2:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE >>>3:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. >>>4:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-10:** Visit Rome for 7 days. **Day 10:** Fly from Rome to Naples. **Day 10-14:** Visit Naples for 5 days. **Day 14:** Fly from Naples to Dubrovnik. **Day 14-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Rome. **Day 15-19:** Visit Rome for 5 days. **Day 19:** Fly from Rome to Split. **Day 19-22:** Visit Split for 4 days. >>>5:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-13:** Visit Rome for 7 days. **Day 13:** Fly from Rome to Naples. **Day 13-19:** Visit Naples for 6 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. **Day 12-15:** Visit Dubrovnik to meet relatives. >>>6:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. >>>7:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-6:** Arriving in Seville and visit Seville for 6 days. **Day 6:** Fly from Seville to Rome. **Day 6-12:** Visit Rome for 7 days. **Day 12:** Fly from Rome to Dubrovnik. **Day 12-15:** Visit Dubrovnik for 4 days. **Day 15:** Fly from Dubrovnik to Naples. **Day 15-19:** Visit Naples for 5 days. **Day 19:** Fly from Naples to Split. **Day 19-22:** Visit Split for 4 days.

You plan to visit 10 European cities for 24 days in total. You only take direct flights to commute between cities. You would like to visit Venice for 3 days. You plan to stay in Reykjavik for 2 days. You would like to visit Munich for 3 days. From day 4 to day 6, there is a annual show you want to attend in Munich. You would like to visit Santorini for 3 days. You plan to visit relatives in Santorini between day 8 and day 10. You would like to visit Manchester for 3 days. You plan to stay in Porto for 3 days. You would like to visit Bucharest for 5 days. You want to spend 4 days in Tallinn. You want to spend 2 days in Valencia. You have to attend a workshop in Valencia between day 14 and day 15. You plan to stay in Vienna for 5 days. Here are the cities that have direct flights: Bucharest and Manchester, Munich and Venice, Santorini and Manchester, Vienna and Reykjavik, Venice and Santorini, Munich and Porto, Valencia and Vienna, Manchester and Vienna, Porto and Vienna, Venice and Manchester, Santorini and Vienna, Munich and Manchester, Munich and Reykjavik, Bucharest and Valencia, Venice and Vienna, Bucharest and Vienna, Porto and Manchester, Munich and Vienna, Valencia and Porto, Munich and Bucharest, Tallinn and Munich, Santorini and Bucharest, Munich and Valencia. Find a trip plan of visiting the cities for 24 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-3:** Arriving in Munich and visit Munich for 3 days. **Day 3:** Fly from Munich to Santorini. **Day 3-6:** Visit Santorini for 4 days. **Day 6:** Fly from Santorini to Bucharest. **Day 6-11:** Visit Bucharest for 6 days. **Day 11:** Fly from Bucharest to Porto. **Day 11-14:** Visit Porto for 4 days. **Day 14:** Fly from Porto to Valencia. **Day 14-15:** Visit Valencia for 2 days. **Day 15:** Fly from Valencia to Vienna. **Day 15-20:** Visit Vienna for 6 days. **Day 20:** Fly from Vienna to Tallinn. **Day 20-22:** Visit Tallinn for 3 days. **Day 22:** Fly from Tallinn to Venice. **Day 22-24:** Visit Venice for 3 days. >>>1:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-3:** Arriving in Munich and visit Munich for 3 days. **Day 3:** Fly from Munich to Venice. **Day 3-5:** Visit Venice for 3 days. **Day 5:** Fly from Venice to Santorini. **Day 5-7:** Visit Santorini for 3 days. **Day 7:** Fly from Santorini to Bucharest. **Day 7-11:** Visit Bucharest for 5 days. **Day 11:** Fly from Bucharest to Valencia. **Day 11-13:** Visit Valencia for 3 days. **Day 13:** Fly from Valencia to Tallinn. **Day 13-16:** Visit Tallinn for 4 days. **Day 16:** Fly from Tallinn to Porto. **Day 16-18:** Visit Porto for 3 >>>2:no response >>>3:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-3:** Arriving in Venice and visit Venice for 3 days. **Day 3:** Fly from Venice to Munich. **Day 3-6:** Visit Munich for 3 days. **Day 6:** Fly from Munich to Santorini. **Day 6-8:** Visit Santorini for 3 days. **Day 8:** Fly from Santorini to Manchester. **Day 8-10:** Visit Manchester for 3 days. **Day 10:** Fly from Manchester to Porto. **Day 10-12:** Visit Porto for 3 days. **Day 12:** Fly from Porto to Bucharest. **Day 12-1 >>>4:no response >>>5:no response >>>6:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-4:** Arriving in Munich and visit Munich for 4 days. **Day 4:** Fly from Munich to Venice. **Day 4-6:** Visit Venice for 3 days. **Day 6:** Fly from Venice to Santorini. **Day 6-8:** Visit Santorini for 3 days. **Day 8:** Fly from Santorini to Porto. **Day 8-10:** Visit Porto for 3 days. **Day 10:** Fly from Porto to Bucharest. **Day 10-15:** Visit Bucharest for 6 days. **Day 15:** Fly from Bucharest to Vienna. **Day 15-20:** Visit Vienna for 6 days. **Day 20:** Fly from Vienna to Tallinn. **Day 20-21:** Visit Tallinn for 2 days. **Day 21:** Fly from Tallinn to Valencia. **Day 21-22:** Visit Valencia for 2 days. **Day 22:** Fly from Valencia to Munich. **Day 22-24:** Visit Munich for 3 days. >>>7:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-3:** Arriving in Venice and visit Venice for 3 days. **Day 3:** Fly from Venice to Munich. **Day 3-6:** Visit Munich for 3 days. **Day 6:** Fly from Munich to Santorini. **Day 6-10:** Visit Santorini for 3 days. **Day 10:** Fly from Santorini to Vienna. **Day 10-14:** Visit Vienna for 5 days. **Day 14:** Fly from Vienna to Valencia. **Day 14-15:** Visit Valencia for 2 days. **Day 15:** Fly from Valencia to Porto. **Day 15-17:** Visit Porto for 3 days. **Day 17:** Fly from Porto to Manchester. **Day 17-19:** Visit Manchester for 3 days. **Day 19:** Fly from Manchester to Bucharest. **Day 19-23:** Visit Bucharest for 5 days. **Day 23:** Fly from Bucharest to Tallinn. **Day 23-24:** Visit Tallinn for 2 days. Please note that this itinerary does not include a visit to Reykjavik. This is because there are no direct flights connecting Reykjavik to any of the other cities in the itinerary after visiting Santorini. To include Reykjavik, you would need to adjust the itinerary and potentially add a connecting flight. SOLUTION:Here is the trip plan for visiting the 10 European cities for 24 days: **Day 1-4:** Arriving in Tallinn and visit Tallinn for 4 days. **Day 4:** Fly from Tallinn to Munich. **Day 4-6:** Visit Munich for 3 days. **Day 6:** Fly from Munich to Venice. **Day 6-8:** Visit Venice for 3 days. **Day 8:** Fly from Venice to Santorini. **Day 8-10:** Visit Santorini for 3 days. **Day 10:** Fly from Santorini to Bucharest. **Day 10-14:** Visit Bucharest for 5 days. **Day 14:** Fly from Bucharest to Valencia. **Day 14-15:** Visit Valencia for 2 days. **Day 15:** Fly from Valencia to Porto. **Day 15-17:** Visit Porto for 3 days. **Day 17:** Fly from Porto to Manchester. **Day 17-19:** Visit Manchester for 3 days. **Day 19:** Fly from Manchester to Vienna. **Day 19-23:** Visit Vienna for 5 days. **Day 23:** Fly from Vienna to Reykjavik. **Day 23-24:** Visit Reykjavik for 2 days.

You plan to visit 10 European cities for 27 days in total. You only take direct flights to commute between cities. You would like to visit Budapest for 3 days. From day 8 to day 10, there is a annual show you want to attend in Budapest. You would like to visit Lisbon for 4 days. You want to spend 5 days in Florence. You would like to visit Porto for 2 days. You would like to visit Prague for 2 days. You are going to attend a wedding in Prague between day 5 and day 6. You want to spend 4 days in Warsaw. You want to spend 5 days in Amsterdam. During day 1 and day 5, you have to attend a conference in Amsterdam. You want to spend 3 days in Istanbul. You would like to meet your friends at Istanbul between day 6 and day 8 to tour together. You plan to stay in Riga for 5 days. You would like to visit Bucharest for 3 days. You plan to visit relatives in Bucharest between day 10 and day 12. Here are the cities that have direct flights: Amsterdam and Bucharest, Prague and Lisbon, Amsterdam and Istanbul, Istanbul and Budapest, Amsterdam and Warsaw, Istanbul and Riga, Riga and Lisbon, Bucharest and Riga, Budapest and Bucharest, Budapest and Lisbon, Istanbul and Porto, Prague and Warsaw, Amsterdam and Lisbon, Amsterdam and Riga, Prague and Budapest, Amsterdam and Prague, Amsterdam and Porto, Porto and Lisbon, Amsterdam and Florence, Prague and Florence, Istanbul and Lisbon, Riga and Warsaw, Prague and Bucharest, Lisbon and Florence, Warsaw and Porto, Istanbul and Bucharest, Bucharest and Lisbon, Prague and Istanbul, Amsterdam and Budapest, Warsaw and Lisbon, Budapest and Warsaw, Prague and Riga, Istanbul and Warsaw, Bucharest and Warsaw. Find a trip plan of visiting the cities for 27 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-5:** Arriving in Amsterdam and visit Amsterdam for 5 days. **Day 5:** Fly from Amsterdam to Istanbul. **Day 5-8:** Visit Istanbul for 4 days. **Day 8:** Fly from Istanbul to Riga. **Day 8-12:** Visit Riga for 5 days. **Day 12:** Fly from Riga to Bucharest. **Day 12-15:** Visit Bucharest for 4 days. **Day 15:** Fly from Bucharest to Budapest. **Day 15-18:** Visit Budapest for 4 days. **Day 18:** Fly from Budapest to Lisbon. **Day 18-22:** Visit Lisbon for 5 days. **Day 22:** Fly from Lisbon to Porto. **Day 22-23:** Visit Porto for 2 days. **Day 23:** Fly from Porto to Prague. **Day 23-24:** Visit Prague for 2 days. **Day 24:** Fly from Prague to Warsaw. **Day >>>1:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-5:** Arriving in Amsterdam and visit Amsterdam for 5 days. **Day 5:** Fly from Amsterdam to Prague. **Day 5-6:** Visit Prague for 2 days. **Day 6:** Fly from Prague to Istanbul. **Day 6-8:** Visit Istanbul for 3 days. **Day 8:** Fly from Istanbul to Budapest. **Day 8-10:** Visit Budapest for 3 days. **Day 10:** Fly from Budapest to Bucharest. **Day 10-12:** Visit >>>2:no response >>>3:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-2:** Arriving in Amsterdam and visit Amsterdam for 2 days. **Day 2:** Fly from Amsterdam to Prague. **Day 2-5:** Visit Prague for 3 days. **Day 5:** Fly from Prague to Istanbul. **Day 5-8:** Visit Istanbul for 3 >>>4:no response >>>5:no response >>>6:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-5:** Arriving in Amsterdam and visit Amsterdam for 5 days. **Day 5:** Fly from Amsterdam to Istanbul. **Day 5-8:** Visit Istanbul for 4 days. **Day 8:** Fly from Istanbul to Prague. **Day 8-10:** Visit Prague for 3 days. **Day 10:** Fly from Prague to Lisbon. **Day 10-12:** Visit Lisbon for 3 days. **Day 12:** Fly from Lisbon to Warsaw. **Day 12-15:** Visit Warsaw for 4 days. **Day 15:** Fly from Warsaw to Florence. **Day 15-20:** Visit Florence for 5 days. **Day 20:** Fly from Florence to Porto. **Day 20-21:** Visit Porto for 2 days. **Day 21:** Fly from Porto to Riga. **Day 21-26:** Visit Riga for 5 days. **Day 26:** Fly from Riga to Bucharest. **Day 26- >>>7:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-5:** Arriving in Amsterdam and visit Amsterdam for 5 days. **Day 5:** Fly from Amsterdam to Prague. **Day 5-6:** Visit Prague for 2 days. **Day 6:** Fly from Prague to Istanbul. **Day 6-8:** Visit Istanbul for 3 days. **Day 8:** Fly from Istanbul to Budapest. **Day 8-10:** Visit Budapest for 3 days. **Day 10:** Fly from Budapest to Bucharest. **Day 10-12:** Visit Bucharest for 3 days. **Day 12:** Fly from Bucharest to Riga. **Day 12-16:** Visit Riga for 5 days. **Day 16:** Fly from Riga to Lisbon. **Day 16-19:** Visit Lisbon for 4 days. **Day 19:** Fly from Lisbon to Florence. **Day 19-23:** Visit Florence for 5 days. **Day 23:** Fly from Florence to Warsaw. **Day 23-26:** Visit Warsaw for 4 days. **Day 26:** Fly from Warsaw to Porto. **Day 26-27:** Visit Porto for 2 days. SOLUTION:Here is the trip plan for visiting the 10 European cities for 27 days: **Day 1-5:** Arriving in Amsterdam and visit Amsterdam for 5 days. **Day 5:** Fly from Amsterdam to Prague. **Day 5-6:** Visit Prague for 2 days. **Day 6:** Fly from Prague to Istanbul. **Day 6-8:** Visit Istanbul for 3 days. **Day 8:** Fly from Istanbul to Budapest. **Day 8-10:** Visit Budapest for 3 days. **Day 10:** Fly from Budapest to Bucharest. **Day 10-12:** Visit Bucharest for 3 days. **Day 12:** Fly from Bucharest to Riga. **Day 12-16:** Visit Riga for 5 days. **Day 16:** Fly from Riga to Warsaw. **Day 16-19:** Visit Warsaw for 4 days. **Day 19:** Fly from Warsaw to Porto. **Day 19-20:** Visit Porto for 2 days. **Day 20:** Fly from Porto to Lisbon. **Day 20-23:** Visit Lisbon for 4 days. **Day 23:** Fly from Lisbon to Florence. **Day 23-27:** Visit Florence for 5 days.

You plan to visit 5 European cities for 20 days in total. You only take direct flights to commute between cities. You plan to stay in Dublin for 4 days. From day 14 to day 17, there is a annual show you want to attend in Dublin. You plan to stay in Warsaw for 4 days. You would like to visit Seville for 4 days. You want to spend 7 days in Budapest. You would like to meet your friends at Budapest between day 1 and day 7 to tour together. You would like to visit Tallinn for 5 days. Here are the cities that have direct flights: Warsaw and Tallinn, Budapest and Dublin, Dublin and Seville, Budapest and Warsaw, Tallinn and Dublin. Find a trip plan of visiting the cities for 20 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Dublin. **Day 7-11:** Visit Dublin for 5 days. **Day 11:** Fly from Dublin to Warsaw. **Day 11-14:** Visit Warsaw for 4 days. **Day 14:** Fly from Warsaw to Tallinn. **Day 14-18:** Visit Tallinn for 5 days. **Day 18:** Fly from Tallinn to Seville. **Day 18-20:** Visit Seville for 3 days. >>>1:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Dublin. **Day 7-10:** Visit Dublin for 4 days. **Day 10:** Fly from Dublin to Warsaw. **Day 10-13:** Visit Warsaw for 4 days. **Day 13:** Fly from Warsaw to Seville. **Day 13-16:** Visit Seville for 4 days. **Day 16:** Fly from Seville to Tallinn. **Day 16-20:** Visit Tallinn for 5 days. >>>2:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Warsaw. **Day 7-10:** Visit Warsaw for 4 days. **Day 10:** Fly from Warsaw to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Dublin. **Day 14-17:** Visit Dublin for 4 days. **Day 17:** Fly from Dublin to Seville. **Day 17-20:** Visit Seville for 4 days. >>>3:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Warsaw. **Day 7-10:** Visit Warsaw for 4 days. **Day 10:** Fly from Warsaw to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Dublin. **Day 14-17:** Visit Dublin for 4 days. **Day 17:** Fly from Dublin to Seville. **Day 17-20:** Visit Seville for 4 days. >>>4:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 1:** Fly from Budapest to Dublin. **Day 1:** Meet friends in Dublin. **Day 7:** Fly from Dublin to Warsaw. **Day 7-10:** Visit Warsaw for 4 days. **Day 10:** Fly from Warsaw to Seville. **Day 10-13:** Visit Seville for 4 days. **Day 13:** Fly from Seville to Dublin. **Day 13-14:** Visit Dublin for 2 days. **Day 14:** Fly from Dublin to Tallinn. **Day 14-18:** Visit Tallinn for 5 days. **Day 18:** Fly from Tallinn to Budapest. **Day 18-20:** Visit Budapest for 4 days. **Day 20:** Fly from Budapest to Dublin. **Day 20-21:** Visit Dublin for 2 days. >>>5:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest with friends for 7 days. **Day 7:** Fly from Budapest to Dublin. **Day 7-10:** Visit Dublin for 4 days. **Day 10:** Fly from Dublin to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Seville. **Day 14-17:** Visit Seville for 4 days. **Day 17:** Fly from Seville to Warsaw. **Day 17-20:** Visit Warsaw for 4 days. >>>6:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Warsaw. **Day 7-11:** Visit Warsaw for 4 days. **Day 11:** Fly from Warsaw to Tallinn. **Day 11-15:** Visit Tallinn for 5 days. **Day 15:** Fly from Tallinn to Dublin. **Day 15-19:** Visit Dublin for 4 days. **Day 19:** Fly from Dublin to Seville. **Day 19-20:** Visit Seville for 2 days. >>>7:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Warsaw. **Day 7-10:** Visit Warsaw for 4 days. **Day 10:** Fly from Warsaw to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Dublin. **Day 14-17:** Visit Dublin for 4 days. **Day 17:** Fly from Dublin to Seville. **Day 17-20:** Visit Seville for 4 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Budapest and visit Budapest for 7 days. **Day 7:** Fly from Budapest to Warsaw. **Day 7-10:** Visit Warsaw for 4 days. **Day 10:** Fly from Warsaw to Tallinn. **Day 10-14:** Visit Tallinn for 5 days. **Day 14:** Fly from Tallinn to Dublin. **Day 14-17:** Visit Dublin for 4 days. **Day 17:** Fly from Dublin to Seville. **Day 17-20:** Visit Seville for 4 days.

You plan to visit 3 European cities for 13 days in total. You only take direct flights to commute between cities. You want to spend 6 days in Madrid. You would like to visit Reykjavik for 4 days. You plan to visit relatives in Reykjavik between day 10 and day 13. You would like to visit Paris for 5 days. Here are the cities that have direct flights: from Reykjavik to Madrid, Paris and Reykjavik, Madrid and Paris. Find a trip plan of visiting the cities for 13 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Reykjavik. **Day 6-9:** Visit Reykjavik for 4 days. **Day 9:** Fly from Reykjavik to Paris. **Day 9-13:** Visit Paris for 5 days. >>>1:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Madrid. **Day 4-9:** Visit Madrid for 6 days. **Day 9:** Fly from Madrid to Paris. **Day 9-13:** Visit Paris for 5 days. >>>2:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Madrid. **Day 4-9:** Visit Madrid for 6 days. **Day 9:** Fly from Madrid to Paris. **Day 9-13:** Visit Paris for 5 days. >>>3:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Reykjavik. **Day 6-10:** Visit Reykjavik for 4 days. **Day 10:** Fly from Reykjavik to Paris. **Day 10-13:** Visit Paris for 5 days. Please provide me with a new task and I will try my best to find a suitable solution. >>>4:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Reykjavik. **Day 6-9:** Visit Reykjavik for 4 days. **Day 9:** Fly from Reykjavik to Paris. **Day 9-13:** Visit Paris for 5 days. >>>5:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Reykjavik. **Day 6-10:** Visit Reykjavik for 4 days. **Day 10:** Fly from Reykjavik to Paris. **Day 10-13:** Visit Paris for 5 days. >>>6:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Reykjavik. **Day 6-10:** Visit Reykjavik for 5 days. **Day 10:** Fly from Reykjavik to Paris. **Day 10-13:** Visit Paris for 4 days. >>>7:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-5:** Arriving in Paris and visit Paris for 5 days. **Day 5:** Fly from Paris to Reykjavik. **Day 5-9:** Visit Reykjavik for 4 days. **Day 9:** Fly from Reykjavik to Madrid. **Day 9-13:** Visit Madrid for 6 days. SOLUTION:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-6:** Arriving in Madrid and visit Madrid for 6 days. **Day 6:** Fly from Madrid to Paris. **Day 6-10:** Visit Paris for 5 days. **Day 10:** Fly from Paris to Reykjavik. **Day 10-13:** Visit Reykjavik for 4 days.

You plan to visit 8 European cities for 24 days in total. You only take direct flights to commute between cities. You would like to visit Zurich for 3 days. You want to spend 4 days in Florence. You would like to visit Prague for 5 days. You would like to visit Munich for 4 days. You plan to visit relatives in Munich between day 21 and day 24. You would like to visit Lyon for 5 days. You plan to stay in Vienna for 2 days. You want to spend 4 days in Berlin. You have to attend a workshop in Berlin between day 5 and day 8. You plan to stay in Seville for 4 days. Here are the cities that have direct flights: from Florence to Munich, Lyon and Munich, Prague and Munich, Prague and Lyon, Florence and Prague, Vienna and Zurich, Berlin and Zurich, Vienna and Lyon, Zurich and Munich, Berlin and Munich, Vienna and Berlin, Vienna and Prague, Seville and Vienna, Vienna and Munich, Vienna and Florence, from Zurich to Florence, Seville and Munich, Zurich and Prague. Find a trip plan of visiting the cities for 24 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-3:** Arriving in Zurich and visit Zurich for 3 days. **Day 3:** Fly from Zurich to Florence. **Day 3-6:** Visit Florence for 4 days. **Day 6:** Fly from Florence to Prague. **Day 6-10:** Visit Prague for 5 days. **Day 10:** Fly from Prague to Munich. **Day 10-14:** Visit Munich for 5 days. **Day 14:** Fly from Munich to Lyon. **Day 14-18:** Visit Lyon for 5 days. **Day 18:** Fly from Lyon to Vienna. **Day 18-19:** Visit Vienna for 2 days. **Day 19:** Fly from Vienna to Berlin. **Day 19-22:** Visit Berlin for 4 days. **Day 22:** Fly from Berlin to Seville. **Day 22-24:** Visit Seville for 3 days. >>>1:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-3:** Arriving in Zurich and visit Zurich for 3 days. **Day 3:** Fly from Zurich to Vienna. **Day 3-4:** Visit Vienna for 2 days. **Day 4:** Fly from Vienna to Berlin. **Day 4-8:** Visit Berlin for 5 days. **Day 8:** Fly from Berlin to Florence. **Day 8-12:** Visit Florence for 5 days. **Day 12:** Fly from Florence to Prague. **Day 12-16:** Visit Prague for 5 days. **Day 16:** Fly from Prague to Munich. **Day 16-20:** Visit Munich for 5 days. **Day 20:** Fly from Munich to Lyon. **Day 20-24:** Visit Lyon for 5 days. **Day 24:** Fly from Lyon to Seville. **Day 24-27:** Visit Seville for 4 days. >>>2:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-4:** Arriving in Florence and visit Florence for 4 days. **Day 4:** Fly from Florence to Prague. **Day 4-8:** Visit Prague for 5 days. **Day 8:** Fly from Prague to Munich. **Day 8-11:** Visit Munich for 4 days. **Day 11:** Fly from Munich to Zurich. **Day 11-12:** Visit Zurich for 2 days. **Day 12:** Fly from Zurich to Vienna. **Day 12-14:** Visit Vienna for 3 days. **Day 14:** Fly from Vienna to Seville. **Day 14-17:** Visit Seville for 4 days. **Day 17:** Fly from Seville to Berlin. **Day 17-20:** Visit Berlin for 4 days. **Day 20:** Fly from Berlin to Florence. **Day 20-21:** Visit Florence for 2 days. **Day 21:** Fly from Florence to Munich. **Day 21-24:** Visit Munich for 4 days. >>>3:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-3:** Arriving in Zurich and visit Zurich for 3 days. **Day 3:** Fly from Zurich to Florence. **Day 3-6:** Visit Florence for 4 days. **Day 6:** Fly from Florence to Prague. **Day 6-11:** Visit Prague for 5 days. **Day 11:** Fly from Prague to Munich. **Day 11-15:** Visit Munich for 4 days. **Day 15:** Fly from Munich to Vienna. **Day 15-16:** Visit Vienna for 2 days. **Day 16:** Fly from Vienna to Berlin. **Day 16-20:** Visit Berlin for 4 days. **Day 20:** Fly from Berlin to Lyon. **Day 20-24:** Visit Lyon for 5 days. **Day 24:** Fly from Lyon to Seville. **Day 24-27:** Visit Seville for 4 days. >>>4:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-2:** Arriving in Florence and visit Florence for 2 days. **Day 2:** Fly from Florence to Prague. **Day 2-5:** Visit Prague for 4 days. **Day 5:** Fly from Prague to Berlin. **Day 5-8:** Visit Berlin for 4 days. **Day 8:** Fly from Berlin to Munich. **Day 8-11:** Visit Munich for 4 days. **Day 11:** Fly from Munich to Vienna. **Day 11-12:** Visit Vienna for 2 days. **Day 12:** Fly from Vienna to Lyon. **Day 12-16:** Visit Lyon for 5 days. **Day 16:** Fly from Lyon to Seville. **Day 16-20:** Visit Seville for 4 days. **Day 20:** Fly from Seville to Munich. **Day 20-21:** Visit Munich for 2 days. **Day 21:** Fly from Munich to Vienna. **Day 21-24:** Visit Vienna for 4 days. >>>5:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-4:** Arriving in Florence and visit Florence for 4 days. **Day 4:** Fly from Florence to Munich. **Day 4-7:** Visit Munich for 4 days. **Day 7:** Fly from Munich to Lyon. **Day 7-11:** Visit Lyon for 5 days. **Day 11:** Fly from Lyon to Vienna. **Day 11-12:** Visit Vienna for 2 days. **Day 12:** Fly from Vienna to Berlin. **Day 12-16:** Visit Berlin for 4 days. **Day 16:** Fly from Berlin to Zurich. **Day 16-18:** Visit Zurich for 3 days. **Day 18:** Fly from Zurich to Prague. **Day 18-21:** Visit Prague for 4 days. **Day 21:** Fly from Prague to Seville. **Day 21-24:** Visit Seville for 4 days. >>>6:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-3:** Arriving in Zurich and visit Zurich for 3 days. **Day 3:** Fly from Zurich to Florence. **Day 3-5:** Visit Florence for 3 days. **Day 5:** Fly from Florence to Munich. **Day 5-8:** Visit Munich for 4 days. **Day 8:** Fly from Munich to Berlin. **Day 8-12:** Visit Berlin for 5 days. **Day 12:** Fly from Berlin to Vienna. **Day 12-14:** Visit Vienna for 3 days. **Day 14:** Fly from Vienna to Lyon. **Day 14-18:** Visit Lyon for 5 days. **Day 18:** Fly from Lyon to Seville. **Day 18-21:** Visit Seville for 4 days. **Day 21:** Fly from Seville to Munich. **Day 21-24:** Visit Munich for 4 days. >>>7:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-3:** Arriving in Zurich and visit Zurich for 3 days. **Day 3:** Fly from Zurich to Florence. **Day 3-6:** Visit Florence for 4 days. **Day 6:** Fly from Florence to Prague. **Day 6-10:** Visit Prague for 5 days. **Day 10:** Fly from Prague to Lyon. **Day 10-14:** Visit Lyon for 5 days. **Day 14:** Fly from Lyon to Vienna. **Day 14-15:** Visit Vienna for 2 days. **Day 15:** Fly from Vienna to Berlin. **Day 15-18:** Visit Berlin for 4 days. **Day 18:** Fly from Berlin to Seville. **Day 18-21:** Visit Seville for 4 days. **Day 21:** Fly from Seville to Munich. **Day 21-24:** Visit Munich for 4 days. SOLUTION:Here is the trip plan for visiting the 8 European cities for 24 days: **Day 1-4:** Arriving in Seville and visit Seville for 4 days. **Day 4:** Fly from Seville to Vienna. **Day 4-5:** Visit Vienna for 2 days. **Day 5:** Fly from Vienna to Berlin. **Day 5-8:** Visit Berlin for 4 days. **Day 8:** Fly from Berlin to Zurich. **Day 8-10:** Visit Zurich for 3 days. **Day 10:** Fly from Zurich to Florence. **Day 10-13:** Visit Florence for 4 days. **Day 13:** Fly from Florence to Prague. **Day 13-17:** Visit Prague for 5 days. **Day 17:** Fly from Prague to Lyon. **Day 17-21:** Visit Lyon for 5 days. **Day 21:** Fly from Lyon to Munich. **Day 21-24:** Visit Munich for 4 days.

You plan to visit 8 European cities for 23 days in total. You only take direct flights to commute between cities. You would like to visit Valencia for 4 days. You would like to visit Seville for 3 days. You want to meet a friend in Seville between day 21 and day 23. You want to spend 3 days in Lyon. You plan to stay in Vienna for 5 days. You plan to stay in Budapest for 3 days. You would like to visit Helsinki for 5 days. You plan to stay in Riga for 4 days. You plan to visit relatives in Riga between day 7 and day 10. You would like to visit Naples for 3 days. Here are the cities that have direct flights: Lyon and Vienna, Valencia and Seville, Vienna and Valencia, Helsinki and Budapest, Vienna and Helsinki, Vienna and Riga, Lyon and Valencia, Vienna and Naples, Helsinki and Naples, Riga and Helsinki, Vienna and Seville, Vienna and Budapest, Naples and Valencia, Budapest and Naples. Find a trip plan of visiting the cities for 23 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-4:** Arriving in Valencia and visit Valencia for 4 days. **Day 4:** Fly from Valencia to Lyon. **Day 4-6:** Visit Lyon for 3 days. **Day 6:** Fly from Lyon to Vienna. **Day 6-10:** Visit Vienna for 5 days. **Day 10:** Fly from Vienna to Riga. **Day 10-13:** Visit Riga for 4 days. **Day 13:** Fly from Riga to Helsinki. **Day 13-17:** Visit Helsinki for 5 days. **Day 17:** Fly from Helsinki to Budapest. **Day 17-19:** Visit Budapest for 3 days. **Day 19:** Fly from Budapest to Naples. **Day 19-21:** Visit Naples for 3 days. **Day 21:** Fly from Naples to Seville. **Day 21-23:** Visit Seville for 3 days. >>>1:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-4:** Arriving in Valencia and visit Valencia for 4 days. **Day 4:** Fly from Valencia to Lyon. **Day 4-7:** Visit Lyon for 3 days. **Day 7:** Fly from Lyon to Vienna. **Day 7-10:** Visit Vienna for 5 days. **Day 10:** Fly from Vienna to Budapest. **Day 10-12:** Visit Budapest for 3 days. **Day 12:** Fly from Budapest to Helsinki. **Day 12-16:** Visit Helsinki for 5 days. **Day 16:** Fly from Helsinki to Riga. **Day 16-19:** Visit Riga for 4 days. **Day 19:** Fly from Riga to Naples. **Day 19-21:** Visit Naples for 3 days. **Day 21:** Fly from Naples to Seville. **Day 21-23:** Visit Seville for 3 days. >>>2:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-3:** Arriving in Riga and visit Riga for 4 days. **Day 3:** Fly from Riga to Helsinki. **Day 3-8:** Visit Helsinki for 5 days. **Day 8:** Fly from Helsinki to Naples. **Day 8-10:** Visit Naples for 3 days. **Day 10:** Fly from Naples to Vienna. **Day 10-15:** Visit Vienna for 5 days. **Day 15:** Fly from Vienna to Budapest. **Day 15-17:** Visit Budapest for 3 days. **Day 17:** Fly from Budapest to Lyon. **Day 17-20:** Visit Lyon for 3 days. **Day 20:** Fly from Lyon to Valencia. **Day 20-23:** Visit Valencia for 4 days. **Day 23:** Fly from Valencia to Seville. **Day 23-23:** Visit Seville for 1 day. >>>3:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-4:** Arriving in Valencia and visit Valencia for 4 days. **Day 4:** Fly from Valencia to Seville. **Day 4-6:** Visit Seville for 3 days. **Day 6:** Fly from Seville to Lyon. **Day 6-9:** Visit Lyon for 3 days. **Day 9:** Fly from Lyon to Vienna. **Day 9-14:** Visit Vienna for 5 days. **Day 14:** Fly from Vienna to Budapest. **Day 14-16:** Visit Budapest for 3 days. **Day 16:** Fly from Budapest to Helsinki. **Day 16-20:** Visit Helsinki for 5 days. **Day 20:** Fly from Helsinki to Riga. **Day 20-23:** Visit Riga for 4 days. **Day 23:** Fly from Riga to Naples. **Day 23-25:** Visit Naples for 3 days. >>>4:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-3:** Arriving in Riga and visit Riga for 3 days. **Day 3:** Fly from Riga to Budapest. **Day 3-6:** Visit Budapest for 4 days. **Day 6:** Fly from Budapest to Vienna. **Day 6-10:** Visit Vienna for 5 days. **Day 10:** Fly from Vienna to Lyon. **Day 10-13:** Visit Lyon for 3 days. **Day 13:** Fly from Lyon to Valencia. **Day 13-16:** Visit Valencia for 4 days. **Day 16:** Fly from Valencia to Seville. **Day 16-18:** Visit Seville for 3 days. **Day 18:** Fly from Seville to Naples. **Day 18-20:** Visit Naples for 3 days. **Day 20:** Fly from Naples to Helsinki. **Day 20-23:** Visit Helsinki for 5 days. >>>5:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-3:** Arriving in Vienna and visit Vienna for 3 days. **Day 3:** Fly from Vienna to Budapest. **Day 3-5:** Visit Budapest for 3 days. **Day 5:** Fly from Budapest to Riga. **Day 5-7:** Visit Riga for 3 days. **Day 7:** Fly from Riga to Valencia. **Day 7-10:** Visit Valencia for 4 days. **Day 10:** Fly from Valencia to Seville. **Day 10-12:** Visit Seville for 3 days. **Day 12:** Fly from Seville to Lyon. **Day 12-14:** Visit Lyon for 3 days. **Day 14:** Fly from Lyon to Helsinki. **Day 14-18:** Visit Helsinki for 5 days. **Day 18:** Fly from Helsinki to Naples. **Day 18-20:** Visit Naples for 3 days. >>>6:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-4:** Arriving in Vienna and visit Vienna for 5 days. **Day 4:** Fly from Vienna to Helsinki. **Day 4-7:** Visit Helsinki for 4 days. **Day 7:** Fly from Helsinki to Riga. **Day 7-10:** Visit Riga for 4 days. **Day 10:** Fly from Riga to Budapest. **Day 10-12:** Visit Budapest for 3 days. **Day 12:** Fly from Budapest to Naples. **Day 12-14:** Visit Naples for 3 days. **Day 14:** Fly from Naples to Vienna. **Day 14-17:** Visit Vienna for 4 days. **Day 17:** Fly from Vienna to Lyon. **Day 17-19:** Visit Lyon for 3 days. **Day 19:** Fly from Lyon to Seville. **Day 19-21:** Visit Seville for 3 days. **Day 21:** Fly from Seville to Valencia. **Day 21-23:** Visit Valencia for 3 days. >>>7:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-4:** Arriving in Valencia and visit Valencia for 4 days. **Day 4:** Fly from Valencia to Lyon. **Day 4-6:** Visit Lyon for 3 days. **Day 6:** Fly from Lyon to Vienna. **Day 6-10:** Visit Vienna for 5 days. **Day 10:** Fly from Vienna to Riga. **Day 10-13:** Visit Riga for 4 days. **Day 13:** Fly from Riga to Helsinki. **Day 13-17:** Visit Helsinki for 5 days. **Day 17:** Fly from Helsinki to Budapest. **Day 17-19:** Visit Budapest for 3 days. **Day 19:** Fly from Budapest to Naples. **Day 19-21:** Visit Naples for 3 days. **Day 21:** Fly from Naples to Seville. **Day 21-23:** Visit Seville for 3 days. SOLUTION:Here is the trip plan for visiting the 8 European cities for 23 days: **Day 1-3:** Arriving in Lyon and visit Lyon for 3 days. **Day 3:** Fly from Lyon to Vienna. **Day 3-7:** Visit Vienna for 5 days. **Day 7:** Fly from Vienna to Riga. **Day 7-10:** Visit Riga for 4 days. **Day 10:** Fly from Riga to Helsinki. **Day 10-14:** Visit Helsinki for 5 days. **Day 14:** Fly from Helsinki to Budapest. **Day 14-16:** Visit Budapest for 3 days. **Day 16:** Fly from Budapest to Naples. **Day 16-18:** Visit Naples for 3 days. **Day 18:** Fly from Naples to Valencia. **Day 18-21:** Visit Valencia for 4 days. **Day 21:** Fly from Valencia to Seville. **Day 21-23:** Visit Seville for 3 days.

You plan to visit 5 European cities for 22 days in total. You only take direct flights to commute between cities. You plan to stay in Barcelona for 7 days. You plan to stay in Porto for 6 days. You would like to visit Istanbul for 2 days. You are going to attend a wedding in Istanbul between day 21 and day 22. You want to spend 5 days in Stockholm. You have to attend a workshop in Stockholm between day 1 and day 5. You would like to visit Krakow for 6 days. Here are the cities that have direct flights: Stockholm and Barcelona, Krakow and Barcelona, Barcelona and Istanbul, Stockholm and Krakow, Barcelona and Porto, Stockholm and Istanbul, Krakow and Istanbul, Porto and Istanbul. Find a trip plan of visiting the cities for 22 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Barcelona. **Day 5-11:** Visit Barcelona for 7 days. **Day 11:** Fly from Barcelona to Porto. **Day 11-16:** Visit Porto for 6 days. **Day 16:** Fly from Porto to Istanbul. **Day 16-21:** Visit Istanbul for 6 days. **Day 21:** Fly from Istanbul to Krakow. **Day 21-22:** Visit Krakow for 2 days. >>>1:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Barcelona. **Day 5-12:** Visit Barcelona for 7 days. **Day 12:** Fly from Barcelona to Porto. **Day 12-17:** Visit Porto for 6 days. **Day 17:** Fly from Porto to Istanbul. **Day 17-18:** Visit Istanbul for 2 days. **Day 18:** Fly from Istanbul to Krakow. **Day 18-23:** Visit Krakow for 6 days. >>>2:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Krakow. **Day 5-10:** Visit Krakow for 6 days. **Day 10:** Fly from Krakow to Porto. **Day 10-15:** Visit Porto for 6 days. **Day 15:** Fly from Porto to Barcelona. **Day 15-21:** Visit Barcelona for 7 days. **Day 21:** Fly from Barcelona to Istanbul. **Day 21-22:** Visit Istanbul for 2 days. >>>3:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Barcelona. **Day 5-12:** Visit Barcelona for 7 days. **Day 12:** Fly from Barcelona to Krakow. **Day 12-18:** Visit Krakow for 6 days. **Day 18:** Fly from Krakow to Istanbul. **Day 18-20:** Visit Istanbul for 2 days. **Day 20:** Fly from Istanbul to Porto. **Day 20-26:** Visit Porto for 6 days. **Day 26:** Fly from Porto to Istanbul. **Day 26-27:** Visit Istanbul for 2 days. >>>4:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Barcelona. **Day 5-11:** Visit Barcelona for 7 days. **Day 11:** Fly from Barcelona to Porto. **Day 11-16:** Visit Porto for 6 days. **Day 16:** Fly from Porto to Istanbul. **Day 16-22:** Visit Istanbul for 2 days. **Day 21:** Fly from Istanbul to Krakow. **Day 21-22:** Visit Krakow for 6 days. >>>5:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and attend the workshop for 5 days. **Day 5:** Fly from Stockholm to Barcelona. **Day 5-11:** Visit Barcelona for 7 days. **Day 11:** Fly from Barcelona to Porto. **Day 11-16:** Visit Porto for 6 days. **Day 16:** Fly from Porto to Istanbul. **Day 16-18:** Visit Istanbul for 3 days. **Day 18:** Fly from Istanbul to Krakow. **Day 18-22:** Visit Krakow for 6 days. **Day 22:** Fly from Krakow to Barcelona. **Day 22-23:** Visit Barcelona for 1 day. **Day 23:** Fly from Barcelona to Stockholm. **Day 23-24:** Visit Stockholm for 2 days. **Day 24:** Fly from Stockholm to Istanbul. **Day 24-25:** Visit Istanbul for 2 days. **Day 25:** Fly from Istanbul to Barcelona. **Day 25:** Fly from Barcelona to home. >>>6:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Krakow. **Day 5-10:** Visit Krakow for 6 days. **Day 10:** Fly from Krakow to Barcelona. **Day 10-16:** Visit Barcelona for 7 days. **Day 16:** Fly from Barcelona to Istanbul. **Day 16-21:** Visit Istanbul for 2 days. **Day 21:** Fly from Istanbul to Porto. **Day 21-22:** Visit Porto for 2 days. >>>7:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Krakow. **Day 5-10:** Visit Krakow for 6 days. **Day 10:** Fly from Krakow to Barcelona. **Day 10-16:** Visit Barcelona for 7 days. **Day 16:** Fly from Barcelona to Porto. **Day 16-20:** Visit Porto for 6 days. **Day 20:** Fly from Porto to Istanbul. **Day 21-22:** Visit Istanbul for 2 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 22 days: **Day 1-5:** Arriving in Stockholm and visit Stockholm for 5 days. **Day 5:** Fly from Stockholm to Krakow. **Day 5-10:** Visit Krakow for 6 days. **Day 10:** Fly from Krakow to Barcelona. **Day 10-16:** Visit Barcelona for 7 days. **Day 16:** Fly from Barcelona to Porto. **Day 16-21:** Visit Porto for 6 days. **Day 21:** Fly from Porto to Istanbul. **Day 21-22:** Visit Istanbul for 2 days.

You plan to visit 6 European cities for 17 days in total. You only take direct flights to commute between cities. You want to spend 5 days in Venice. You would like to meet your friends at Venice between day 3 and day 7 to tour together. You would like to visit Amsterdam for 3 days. During day 1 and day 3, you have to attend a conference in Amsterdam. You would like to visit Athens for 5 days. You have to attend a workshop in Athens between day 7 and day 11. You plan to stay in Hamburg for 5 days. You plan to stay in Madrid for 2 days. You want to spend 2 days in Lyon. Here are the cities that have direct flights: Athens and Hamburg, Hamburg and Madrid, Amsterdam and Athens, Amsterdam and Lyon, Venice and Athens, Amsterdam and Venice, Madrid and Lyon, Amsterdam and Hamburg, Venice and Madrid, Venice and Hamburg, Amsterdam and Madrid, Athens and Madrid, Venice and Lyon. Find a trip plan of visiting the cities for 17 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>1:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>2:Here is the trip plan for visiting the EEUU cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>3:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>4:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>5:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-2:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 2:** Fly from Amsterdam to Athens. **Day 2-5:** Visit Athens for 5 days. **Day 5:** Fly from Athens to Hamburg. **Day 5-9:** Visit Hamburg for 5 days. **Day 9:** Fly from Hamburg to Madrid. **Day 9-10:** Visit Madrid for 2 days. **Day 10:** Fly from Madrid to Lyon. **Day 10-12:** Visit Lyon for 3 days. **Day 12:** Fly from Lyon to Venice. **Day 12-16:** Visit Venice for 5 days. **Day 16:** Fly from Venice to Amsterdam. **Day 16:** Fly from Amsterdam to your home country. >>>6:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. >>>7:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days. SOLUTION:Here is the trip plan for visiting the 6 European cities for 17 days: **Day 1-3:** Arriving in Amsterdam and visit Amsterdam for 3 days. **Day 3:** Fly from Amsterdam to Venice. **Day 3-7:** Visit Venice for 5 days. **Day 7:** Fly from Venice to Athens. **Day 7-11:** Visit Athens for 5 days. **Day 11:** Fly from Athens to Hamburg. **Day 11-15:** Visit Hamburg for 5 days. **Day 15:** Fly from Hamburg to Madrid. **Day 15-16:** Visit Madrid for 2 days. **Day 16:** Fly from Madrid to Lyon. **Day 16-17:** Visit Lyon for 2 days.

You plan to visit 9 European cities for 25 days in total. You only take direct flights to commute between cities. You would like to visit Rome for 5 days. During day 12 and day 16, you have to attend a conference in Rome. You plan to stay in Santorini for 3 days. You would like to visit Hamburg for 5 days. You want to spend 2 days in Florence. You plan to stay in Dubrovnik for 4 days. You plan to stay in Istanbul for 2 days. From day 19 to day 20, there is a annual show you want to attend in Istanbul. You want to spend 3 days in Stockholm. You plan to stay in Budapest for 4 days. You plan to stay in Lisbon for 5 days. You have to attend a workshop in Lisbon between day 20 and day 24. Here are the cities that have direct flights: Rome and Lisbon, Hamburg and Istanbul, Hamburg and Stockholm, Rome and Dubrovnik, Santorini and Rome, Stockholm and Istanbul, Budapest and Istanbul, Hamburg and Lisbon, Budapest and Hamburg, Stockholm and Dubrovnik, from Stockholm to Santorini, Budapest and Lisbon, from Dubrovnik to Istanbul, Rome and Istanbul, Stockholm and Rome, Budapest and Rome, Stockholm and Lisbon, Hamburg and Rome, Lisbon and Florence, Istanbul and Lisbon. Find a trip plan of visiting the cities for 25 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Santorini and visit Santorini for 3 days. **Day 5:** Fly from Santorini to Rome. **Day 5-12:** Visit Rome for 8 days. **Day 12:** Fly from Rome to Hamburg. **Day 12-16:** Visit Hamburg for 5 days. **Day 16:** Fly from Hamburg to Stockholm. **Day 16-18:** Visit Stockholm for 3 days. **Day 18:** Fly from Stockholm to Budapest. **Day 18-20:** Visit Budapest for 3 days. **Day 20:** Fly from Budapest to Lisbon. **Day 20-24:** Visit Lisbon for 5 days. **Day 24:** Fly from Lisbon to Istanbul. **Day 24-25:** Visit Istanbul for 2 days. >>>1:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Rome and visit Rome for 5 days. **Day 5:** Fly from Rome to Santorini. **Day 5-7:** Visit Santorini for 3 days. **Day 7:** Fly from Santorini to Hamburg. **Day 7-11:** Visit Hamburg for 5 days. **Day 11:** Fly from Hamburg to Stockholm. **Day 11-13:** Visit Stockholm for 3 days. **Day 13:** Fly from Stockholm to Dubrovnik. **Day 13-16:** Visit Dubrovnik for 4 days. **Day 16:** Fly from Dubrovnik to Istanbul. **Day 16-18:** Visit Istanbul for 2 days. **Day 18:** Fly from Istanbul to Budapest. **Day 18-21:** Visit Budapest for 4 days. **Day 21:** Fly from Budapest to Lisbon. **Day 21-25:** Visit Lisbon for 5 days. >>>2:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Rome and visit Rome for 5 days. **Day 5:** Fly from Rome to Santorini. **Day 5-7:** Visit Santor >>>3:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Rome and visit Rome for 5 days. **Day 5:** Fly from Rome to Santorini. **Day 5-7:** Visit Santorini for 3 days. **Day 7:** Fly from Santorini to Hamburg. **Day 7-11:** Visit Hamburg for 5 days. **Day 11:** Fly from Hamburg to Istanbul. **Day 11-13:** Visit Istanbul for 2 days. **Day 13:** Fly from Istanbul to Dubrovnik. **Day 13-16:** Visit Dubrovnik for 4 days. **Day 16:** Fly from Dubrovnik to Budapest. **Day 16-20:** Visit Budapest for 4 days. **Day 20:** Fly from Budapest to Lisbon. **Day 20-24:** Visit Lisbon for 5 days. **Day 24:** Fly from Lisbon to Stockholm. **Day 24-26:** Visit Stockholm for 3 days. **Day 26:** Fly from Stockholm to Florence. **Day 26-27:** Visit Florence for 2 days. >>>4:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-2:** Arriving in Rome and visit Rome for 5 days. **Day 6:** Fly from Rome to Santorini. **Day 6-8:** Visit Santorini for 3 days. **Day 8:** Fly from Santorini to Hamburg. **Day 8-12:** Visit Hamburg for 5 days. **Day 12:** Fly from Hamburg to Rome. **Day 12-16:** Visit Rome for 5 days. **Day 16:** Fly from Rome to Dubrov >>>5:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-3:** Arriving in Rome and visit Rome for 5 days. **Day 3:** Fly from Rome to Santorini. **Day 3-5:** Visit Santorini for 3 days. **Day 5:** Fly from Santorini to Hamburg. **Day 5-9:** Visit Hamburg for 5 days. **Day 9:** Fly from Hamburg to Budapest. **Day 9-13:** Visit Budapest for 4 days. **Day 13:** Fly from Budapest to Lisbon. ** >>>6:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Santorini and visit Santorini for 3 days. **Day 5:** Fly from Santorini to Rome. **Day 5-12:** Visit Rome for 8 days. **Day 12:** Fly from Rome to Istanbul. **Day 12-14:** Visit Istanbul for 3 days. **Day 14:** Fly from Istanbul to Stockholm. **Day 14-16:** Visit Stockholm for 3 days. **Day 16:** Fly from Stockholm to Budapest. **Day 16-19:** Visit Budapest for 4 days. **Day 19:** Fly from Budapest to Lisbon. **Day 19-24:** Visit Lisbon for 6 days. **Day 24:** Fly from Lisbon to Florence. **Day 24-25:** Visit Florence for 2 days. >>>7:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-5:** Arriving in Hamburg and visit Hamburg for 5 days. **Day 5:** Fly from Hamburg to Stockholm. **Day 5-7:** Visit Stockholm for 3 days. **Day 7:** Fly from Stockholm to Santorini. **Day 7-9:** Visit Santorini for 3 days. **Day 9:** Fly from Santorini to Rome. **Day 9-13:** Visit Rome for 5 days. **Day 13:** Fly from Rome to Dubrovnik. **Day 13-16:** Visit Dubrovnik for 4 days. **Day 16:** Fly from Dubrovnik to Istanbul. **Day 16-18:** Visit Istanbul for 2 days. **Day 18:** Fly from Istanbul to Lisbon. **Day 18-22:** Visit Lisbon for 5 days. **Day 22:** Fly from Lisbon to Florence. **Day 22-23:** Visit Florence for 2 days. **Day 23:** Fly from Florence to Budapest. **Day 23-25:** Visit Budapest for 4 days. SOLUTION:Here is the trip plan for visiting the 9 European cities for 25 days: **Day 1-4:** Arriving in Budapest and visit Budapest for 4 days. **Day 4:** Fly from Budapest to Hamburg. **Day 4-8:** Visit Hamburg for 5 days. **Day 8:** Fly from Hamburg to Stockholm. **Day 8-10:** Visit Stockholm for 3 days. **Day 10:** Fly from Stockholm to Santorini. **Day 10-12:** Visit Santorini for 3 days. **Day 12:** Fly from Santorini to Rome. **Day 12-16:** Visit Rome for 5 days. **Day 16:** Fly from Rome to Dubrovnik. **Day 16-19:** Visit Dubrovnik for 4 days. **Day 19:** Fly from Dubrovnik to Istanbul. **Day 19-20:** Visit Istanbul for 2 days. **Day 20:** Fly from Istanbul to Lisbon. **Day 20-24:** Visit Lisbon for 5 days. **Day 24:** Fly from Lisbon to Florence. **Day 24-25:** Visit Florence for 2 days.

You plan to visit 9 European cities for 21 days in total. You only take direct flights to commute between cities. You plan to stay in Munich for 2 days. You plan to stay in Brussels for 5 days. You want to spend 2 days in Istanbul. You plan to stay in Split for 2 days. You want to spend 5 days in Seville. You plan to stay in Reykjavik for 3 days. You have to attend a workshop in Reykjavik between day 5 and day 7. You want to spend 2 days in Warsaw. You want to meet a friend in Warsaw between day 14 and day 15. You plan to stay in Frankfurt for 4 days. You plan to visit relatives in Frankfurt between day 7 and day 10. You want to spend 4 days in Venice. You are going to attend a wedding in Venice between day 11 and day 14. Here are the cities that have direct flights: Brussels and Munich, Istanbul and Munich, Brussels and Warsaw, Venice and Munich, Reykjavik and Frankfurt, Istanbul and Venice, Brussels and Venice, Split and Munich, Venice and Warsaw, Reykjavik and Munich, Frankfurt and Munich, Frankfurt and Warsaw, Munich and Seville, Istanbul and Warsaw, Frankfurt and Venice, Brussels and Istanbul, Brussels and Reykjavik, Reykjavik and Warsaw, Brussels and Seville, Warsaw and Munich, Frankfurt and Istanbul, from Brussels to Frankfurt, Frankfurt and Split, Warsaw and Split. Find a trip plan of visiting the cities for 21 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to Brussels. **Day 2-7:** Visit Brussels for 6 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-11:** Visit Frankfurt for 5 days. **Day 11:** Fly from Frankfurt to Venice. **Day 11-14:** Visit Venice for 4 days. **Day 14:** Fly from Venice to Warsaw. **Day 14-15:** Visit Warsaw for 2 days. **Day 15:** Fly from Warsaw to Reykjavik. **Day 15-18:** Visit Reykjavik for 4 days. **Day 18:** Fly from Reykjavik to Split. **Day 18-19:** Visit Split for 2 days. **Day 19:** Fly from Split to Istanbul. **Day 19-20:** Visit Istanbul for 2 days. **Day 20:** Fly from Istanbul to Seville. **Day 20-21:** Visit Seville for 2 days. >>>1:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Brussels and visit Brussels for 2 days. **Day 2:** Fly from Brussels to Munich. **Day 2-4:** Visit Munich for 3 days. **Day 4:** Fly from Munich to Istanbul. **Day 4-5:** Visit Istanbul for 2 days. **Day 5:** Fly from Istanbul to Warsaw. **Day 5-6:** Visit Warsaw for 2 days. **Day 6:** Fly from Warsaw to Reykjavik. **Day 6-8:** Visit Reykjavik for 3 days. **Day 8:** Fly from Reykjavik to Frankfurt. **Day 8-10:** Visit Frankfurt for 3 days. **Day 10:** Fly from Frankfurt to Split. **Day 10-11:** Visit Split for 2 days. **Day 11:** Fly from Split to Venice. **Day 11-14:** Visit Venice for 4 days. **Day 14:** Fly from Venice to Brussels. **Day 14-18:** Visit Brussels for 5 days. **Day 18:** Fly from Brussels to Seville. **Day 18-21:** Visit Seville for 4 days. >>>2:Here is the trip plan for visiting the >>>3:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to Brussels. **Day 2-6:** Visit Brussels for 5 days. **Day 6:** Fly from Brussels to Reykjavik. **Day 6-8:** Visit Reykjavik for 3 days. **Day 8:** Fly from Reykjavik to Frankfurt. **Day 8-11:** Visit Frankfurt for 4 days. **Day 11:** Fly from Frankfurt to Venice. **Day 11-14:** Visit Venice for 4 days. **Day 14:** Fly from Venice to Warsaw. **Day 14-15:** Visit Warsaw for 2 days. **Day 15:** Fly from Warsaw to Istanbul. **Day 15-16:** Visit Istanbul for 2 days. **Day 16:** Fly from Istanbul to Split. **Day 16-17:** Visit Split for 2 days. **Day 17:** Fly from Split to Seville. **Day 17-21:** Visit Seville for 5 days. >>>4:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to Brussels. **Day 2-6:** Visit Brussels for 5 days. **Day 6:** Fly >>>5:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to Brussels. **Day 2-6:** Visit Brussels for 5 days. **Day 6:** Fly >>>6:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-2:** Arriving in Munich and visit Munich for 2 days. **Day 2:** Fly from Munich to Brussels. **Day 2-7:** Visit Brussels for 5 days. **Day 7:** Fly from Brussels to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Reykjavik. **Day 10-12:** Visit Reykjavik for 3 days. **Day 12:** Fly from Reykjavik to Warsaw. **Day 12-14:** Visit Warsaw for 3 days. **Day 14:** Fly from Warsaw to Venice. **Day 14-18:** Visit Venice for 5 days. **Day 18:** Fly from Venice to Split. **Day 18-19:** Visit Split for 2 days. **Day 19:** Fly from Split to Munich. **Day 19-21:** Visit Munich for 2 days. >>>7:This task presents a challenge due to the overlapping time constraints for visiting Frankfurt (days 7-10 for relatives) and Venice (days 11-14 for a wedding). It's impossible to be in both places simultaneously with direct flights. Therefore, there is **no possible solution** that fulfills all the given constraints using only direct flights. To make this trip possible, you would need to consider one of the following: * **Adjusting the dates:** Could you shift the visit to relatives in Frankfurt or the wedding in Venice to avoid the overlap? * **Allowing indirect flights:** Would you be open to taking connecting flights to make the itinerary work? Let me know if you'd like to explore either of these options. I can help you find a solution if you provide some flexibility in the constraints. SOLUTION:Here is the trip plan for visiting the 9 European cities for 21 days: **Day 1-5:** Arriving in Brussels and visit Brussels for 5 days. **Day 5:** Fly from Brussels to Reykjavik. **Day 5-7:** Visit Reykjavik for 3 days. **Day 7:** Fly from Reykjavik to Frankfurt. **Day 7-10:** Visit Frankfurt for 4 days. **Day 10:** Fly from Frankfurt to Istanbul. **Day 10-11:** Visit Istanbul for 2 days. **Day 11:** Fly from Istanbul to Venice. **Day 11-14:** Visit Venice for 4 days. **Day 14:** Fly from Venice to Warsaw. **Day 14-15:** Visit Warsaw for 2 days. **Day 15:** Fly from Warsaw to Split. **Day 15-16:** Visit Split for 2 days. **Day 16:** Fly from Split to Munich. **Day 16-17:** Visit Munich for 2 days. **Day 17:** Fly from Munich to Seville. **Day 17-21:** Visit Seville for 5 days.

You plan to visit 5 European cities for 20 days in total. You only take direct flights to commute between cities. You want to spend 2 days in Krakow. You would like to visit Vilnius for 4 days. You would like to visit Vienna for 7 days. You plan to stay in Valencia for 7 days. You are going to attend a wedding in Valencia between day 10 and day 16. You would like to visit Florence for 4 days. Here are the cities that have direct flights: Vienna and Krakow, Vienna and Vilnius, from Krakow to Vilnius, Florence and Vienna, Vienna and Valencia, Valencia and Krakow. Find a trip plan of visiting the cities for 20 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Vilnius. **Day 2-5:** Visit Vilnius for 4 days. **Day 5:** Fly from Vilnius to Vienna. **Day 5-12:** Visit Vienna for 7 days. **Day 12:** Fly from Vienna to Valencia. **Day 12-18:** Visit Valencia for 7 days. **Day 18:** Fly from Valencia to Florence. **Day 18-20:** Visit Florence for 4 days. >>>1:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-4:** Arriving in Vienna and visit Vienna for 4 days. **Day 4:** Fly from Vienna to Krakow. **Day 4-5:** Visit Krakow for 2 days. **Day 5:** Fly from Krakow to Vilnius. **Day 5-8:** Visit Vilnius for 4 days. **Day 8:** Fly from Vilnius to Florence. **Day 8-11:** Visit Florence for 4 days. **Day 11:** Fly from Florence to Valencia. **Day 11-17:** Visit Valencia for 7 days. >>>2:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Vilnius. **Day 2-5:** Visit Vilnius for 4 days. **Day 5:** Fly from Vilnius to Vienna. **Day 5-11:** Visit Vienna for 7 days. **Day 11:** Fly from Vienna to Valencia. **Day 11-16:** Visit Valencia for 7 days. **Day 16:** Fly from Valencia to Florence. **Day 16-19:** Visit Florence for 4 days. >>>3:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Vilnius. **Day 2-5:** Visit Vilnius for 4 days. **Day 5:** Fly from Vilnius to Vienna. **Day 5-11:** Visit Vienna for 7 days. **Day 11:** Fly from Vienna to Valencia. **Day 11-17:** Visit Valencia for 7 days. **Day 17:** Fly from Valencia to Florence. **Day 17-20:** Visit Florence for 4 days. >>>4:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Vilnius. **Day 2-5:** Visit Vilnius for 4 days. **Day 5:** Fly from Vilnius to Vienna. **Day 5-11:** Visit Vienna for 7 days. **Day 11:** Fly from Vienna to Valencia. **Day 11-16:** Visit Valencia for 7 days. **Day 16:** Fly from Valencia to Florence. **Day 16-19:** Visit Florence for 4 days. >>>5:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-2:** Arriving in Krakow and visit Krakow for 2 days. **Day 2:** Fly from Krakow to Vilnius. **Day 2-5:** Visit Vilnius for 4 days. **Day 5:** Fly from Vilnius to Vienna. **Day 5-12:** Visit Vienna for 7 days. **Day 12:** Fly from Vienna to Valencia. **Day 12-16:** Visit Valencia for 7 days. **Day 16:** Fly from Valencia to Florence. **Day 16-20:** Visit Florence for 4 days. >>>6:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-4:** Arriving in Krakow and visit Krakow for 2 days. **Day 4:** Fly from Krakow to Vilnius. **Day 4-7:** Visit Vilnius for 4 days. **Day 7:** Fly from Vilnius to Vienna. **Day 7-13:** Visit Vienna for 7 days. **Day 13:** Fly from Vienna to Valencia. **Day 13-16:** Visit Valencia for 4 days. **Day 16:** Fly from Valencia to Florence. **Day 16-20:** Visit Florence for 5 days. >>>7:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Krakow. **Day 7-8:** Visit Krakow for 2 days. **Day 8:** Fly from Krakow to Vilnius. **Day 8-11:** Visit Vilnius for 4 days. **Day 11:** Fly from Vilnius to Vienna. **Day 11:** Fly from Vienna to Valencia. **Day 11-17:** Visit Valencia for 7 days. **Day 17:** Fly from Valencia to Florence. **Day 17-20:** Visit Florence for 4 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 20 days: **Day 1-4:** Arriving in Florence and visit Florence for 4 days. **Day 4:** Fly from Florence to Vienna. **Day 4-10:** Visit Vienna for 7 days. **Day 10:** Fly from Vienna to Valencia. **Day 10-16:** Visit Valencia for 7 days. **Day 16:** Fly from Valencia to Krakow. **Day 16-17:** Visit Krakow for 2 days. **Day 17:** Fly from Krakow to Vilnius. **Day 17-20:** Visit Vilnius for 4 days.

You plan to visit 4 European cities for 18 days in total. You only take direct flights to commute between cities. You would like to visit Vienna for 7 days. You would like to visit Tallinn for 6 days. You would like to meet your friends at Tallinn between day 12 and day 17 to tour together. You want to spend 2 days in Amsterdam. You want to spend 6 days in Istanbul. Here are the cities that have direct flights: Vienna and Amsterdam, Istanbul and Amsterdam, Vienna and Istanbul, from Istanbul to Tallinn, Tallinn and Amsterdam. Find a trip plan of visiting the cities for 18 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Istanbul and visit Istanbul for 6 days. **Day 7:** Fly from Istanbul to Amsterdam. **Day 7-8:** Visit Amsterdam for 2 days. **Day 8:** Fly from Amsterdam to Vienna. **Day 8-12:** Visit Vienna for 5 days. **Day 12:** Fly from Vienna to Tallinn. **Day 12-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Istanbul. **Day 17-18:** Visit Istanbul for 2 days. >>>1:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Istanbul. **Day 7-12:** Visit Istanbul for 6 days. **Day 12:** Fly from Istanbul to Tallinn. **Day 12-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Amsterdam. **Day 17-18:** Visit Amsterdam for 2 days. >>>2:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Istanbul. **Day 7-12:** Visit Istanbul for 6 days. **Day 12:** Fly from Istanbul to Tallinn. **Day 12-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Amsterdam. **Day 17-18:** Visit Amsterdam for 2 days. >>>3:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Amsterdam. **Day 7-8:** Visit Amsterdam for 2 days. **Day 8:** Fly from Amsterdam to Istanbul. **Day 8-14:** Visit Istanbul for 6 days. **Day 14:** Fly from Istanbul to Tallinn. **Day 14-18:** Visit Tallinn for 6 days. >>>4:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-2:** Arriving in Amsterdam and visit Amsterdam for 2 days. **Day 2:** Fly from Amsterdam to Istanbul. **Day 2-6:** Visit Istanbul for 6 days. **Day 6:** Fly from Istanbul to Vienna. **Day 6-11:** Visit Vienna for 7 days. **Day 11:** Fly from Vienna to Tallinn. **Day 11-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Amsterdam. **Day 17-18:** Visit Amsterdam for 2 days. >>>5:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-2:** Arriving in Vienna and visit Vienna for 7 days. **Day 9:** Fly from Vienna to Istanbul. **Day 9-15:** Visit Istanbul for 6 days. **Day 15:** Fly from Istanbul to Amsterdam. **Day 15-16:** Visit Amsterdam for 2 days. **Day 16:** Fly from Amsterdam to Tallinn. **Day 16-22:** Visit Tallinn for 6 days. **Day 22:** Fly from Tallinn back to Vienna. >>>6:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-2:** Arriving in Amsterdam and visit Amsterdam for 2 days. **Day 2:** Fly from Amsterdam to Istanbul. **Day 2-6:** Visit Istanbul for 6 days. **Day 6:** Fly from Istanbul to Tallinn. **Day 6-12:** Visit Tallinn for 6 days. **Day 12:** Fly from Tallinn to Amsterdam. **Day 12-17:** Visit Amsterdam for 6 days. **Day 17:** Fly from Amsterdam to Vienna. **Day 17-18:** Visit Vienna for 2 days. >>>7:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Istanbul. **Day 7-12:** Visit Istanbul for 6 days. **Day 12:** Fly from Istanbul to Tallinn. **Day 12-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Amsterdam. **Day 17-18:** Visit Amsterdam for 2 days. SOLUTION:Here is the trip plan for visiting the 4 European cities for 18 days: **Day 1-7:** Arriving in Vienna and visit Vienna for 7 days. **Day 7:** Fly from Vienna to Istanbul. **Day 7-12:** Visit Istanbul for 6 days. **Day 12:** Fly from Istanbul to Tallinn. **Day 12-17:** Visit Tallinn for 6 days. **Day 17:** Fly from Tallinn to Amsterdam. **Day 17-18:** Visit Amsterdam for 2 days.

You plan to visit 6 European cities for 12 days in total. You only take direct flights to commute between cities. You want to spend 4 days in Istanbul. You are going to attend a wedding in Istanbul between day 2 and day 5. You would like to visit Mykonos for 2 days. You plan to stay in Lyon for 4 days. You plan to stay in Frankfurt for 3 days. You want to spend 2 days in Nice. You want to meet a friend in Nice between day 1 and day 2. You plan to stay in Milan for 2 days. You have to attend a workshop in Milan between day 10 and day 11. Here are the cities that have direct flights: Nice and Lyon, Istanbul and Lyon, Frankfurt and Milan, Istanbul and Milan, Nice and Frankfurt, Istanbul and Frankfurt, Milan and Mykonos, Nice and Istanbul, Nice and Mykonos, Lyon and Frankfurt. Find a trip plan of visiting the cities for 12 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Lyon. **Day 5-8:** Visit Lyon for 4 days. **Day 8:** Fly from Lyon to Frankfurt. **Day 8-10:** Visit Frankfurt for 3 days. **Day 10:** Fly from Frankfurt to Milan. **Day 10-11:** Visit Milan for 2 days. **Day 11:** Fly from Milan to Mykonos. **Day 11-12:** Visit Mykonos for 2 days. >>>1:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Lyon. **Day 5-8:** Visit Lyon for 4 days. **Day 8:** Fly from Lyon to Frankfurt. **Day 8-10:** Visit Frankfurt for 3 days. **Day 10:** Fly from Frankfurt to Milan. **Day 10-11:** Visit Milan for 2 days. **Day 11:** Fly from Milan to Mykonos. **Day 11-12:** Visit Mykonos for 2 days. >>>2:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Lyon. **Day 5-9:** Visit Lyon for 4 days. **Day 9:** Fly from Lyon to Frankfurt. **Day 9-11:** Visit Frankfurt for 3 days. **Day 11:** Fly from Frankfurt to Milan. **Day 11-12:** Visit Milan for 2 days. >>>3:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Milan. **Day 5-7:** Visit Milan for 2 days. **Day 7:** Fly from Milan to Mykonos. **Day 7-8:** Visit Mykonos for 2 days. **Day 8:** Fly from Mykonos to Lyon. **Day 8-11:** Visit Lyon for 4 days. **Day 11:** Fly from Lyon to Frankfurt. **Day 11-12:** Visit Frankfurt for 3 days. >>>4:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1:** Arriving in Nice and visit Nice for 2 days. **Day 1:** Fly from Nice to Istanbul. **Day 1-2:** Visit Istanbul for 4 days. **Day 2:** Fly from Istanbul to Lyon. **Day 2-5:** Visit Lyon for 4 days. **Day 5:** Fly from Lyon to Frankfurt. **Day 5-7:** Visit Frankfurt for 3 days. **Day 7:** Fly from Frankfurt to Milan. **Day 7-9:** Visit Milan for 3 days. **Day 9:** Fly from Milan to Mykonos. **Day 9-10:** Visit Mykonos for 2 days. **Day 10:** Fly from Mykonos to Frankfurt. **Day 10:** Fly from Frankfurt to Nice. **Day 10-11:** Visit Nice for 2 days. **Day 11:** Fly from Nice to Milan. **Day 11-12:** Visit Milan for 2 days. >>>5:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1:** Arriving in Nice and visit Nice for 2 days. **Day 1:** Fly from Nice to Istanbul. **Day 1-4:** Visit Istanbul for 4 days. **Day 4:** Fly from Istanbul to Lyon. **Day 4-7:** Visit Lyon for 4 days. **Day 7:** Fly from Lyon to Frankfurt. **Day 7-9:** Visit Frankfurt for 3 days. **Day 9:** Fly from Frankfurt to Milan. **Day 9-10:** Visit Milan for 2 days. **Day 10:** Fly from Milan to Mykonos. **Day 10-12:** Visit Mykonos for 3 days. >>>6:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Lyon. **Day 5-8:** Visit Lyon for 4 days. **Day 8:** Fly from Lyon to Frankfurt. **Day 8-10:** Visit Frankfurt for 3 days. **Day 10:** Fly from Frankfurt to Milan. **Day 10-11:** Visit Milan for 2 days. >>>7:This task presents a challenge! There's no direct flight path that allows attending the wedding in Istanbul (Day 2-5) and meeting a friend in Nice (Day 1-2). Let's break down why: * **Istanbul Constraint:** The wedding requires being in Istanbul on Day 2, meaning arrival must be on or before Day 2. * **Nice Constraint:** Meeting the friend necessitates being in Nice on Day 1. * **No Direct Nice-Istanbul Flight:** The flight list doesn't include a direct flight between Nice and Istanbul. **Conclusion:** To fulfill both the Nice and Istanbul commitments, a connecting flight or alternate transportation would be needed. It's impossible to create a 12-day itinerary with ONLY direct flights that meets all the given constraints. **Possible Solutions:** 1. **Re-evaluate Constraints:** Is there flexibility in the Nice meeting or the Istanbul arrival date? Even a slight adjustment could open up possibilities. 2. **Consider Connecting Flights:** While the task specifies direct flights, a single connecting flight might be the only solution. 3. **Alternative Transportation:** Could a train or other ground transportation link Nice and Istanbul within the timeframe? Let me know if you'd like to explore any of these solutions or adjust the constraints! I'm happy to help find a workable itinerary. SOLUTION:Here is the trip plan for visiting the 6 European cities for 12 days: **Day 1-2:** Arriving in Nice and visit Nice for 2 days. **Day 2:** Fly from Nice to Istanbul. **Day 2-5:** Visit Istanbul for 4 days. **Day 5:** Fly from Istanbul to Lyon. **Day 5-8:** Visit Lyon for 4 days. **Day 8:** Fly from Lyon to Frankfurt. **Day 8-10:** Visit Frankfurt for 3 days. **Day 10:** Fly from Frankfurt to Milan. **Day 10-11:** Visit Milan for 2 days. **Day 11:** Fly from Milan to Mykonos. **Day 11-12:** Visit Mykonos for 2 days.

You plan to visit 9 European cities for 22 days in total. You only take direct flights to commute between cities. You want to spend 4 days in Frankfurt. You plan to stay in Florence for 3 days. You want to meet a friend in Florence between day 20 and day 22. You plan to stay in Reykjavik for 5 days. You would like to meet your friends at Reykjavik between day 7 and day 11 to tour together. You want to spend 2 days in Santorini. You would like to visit Helsinki for 4 days. You want to spend 2 days in Stockholm. You plan to stay in Milan for 4 days. You plan to visit relatives in Milan between day 4 and day 7. You want to spend 2 days in Dubrovnik. You would like to visit Vilnius for 4 days. You have to attend a workshop in Vilnius between day 14 and day 17. Here are the cities that have direct flights: Reykjavik and Frankfurt, Santorini and Milan, Dubrovnik and Frankfurt, from Stockholm to Santorini, Stockholm and Reykjavik, Stockholm and Frankfurt, Stockholm and Milan, Milan and Reykjavik, Reykjavik and Helsinki, Milan and Vilnius, Dubrovnik and Stockholm, Frankfurt and Florence, Helsinki and Frankfurt, Helsinki and Vilnius, Stockholm and Helsinki, Milan and Helsinki, Vilnius and Frankfurt, Dubrovnik and Helsinki, Milan and Frankfurt. Find a trip plan of visiting the cities for 22 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly from Milan to Stockholm. **Day 4-6:** Visit Stockholm for 3 days. **Day 6:** Fly from Stockholm to Reykjavik. **Day 6-11:** Visit Reykjavik for 6 days. **Day 11:** Fly from Reykjavik to Helsinki. **Day 11-14:** Visit Helsinki for 4 days. **Day 14:** Fly from Helsinki to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. **Day 17:** Fly from Vilnius to Frankfurt. **Day 17-20:** Visit Frankfurt for 4 days. **Day 20:** Fly from Frankfurt to Florence. **Day 20-22:** Visit Florence for 3 days. >>>1:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-5:** Arriving in Reykjavik and visit Reykjavik for 5 days. **Day 5:** Fly from Reykjavik to Frankfurt. **Day 5-8:** Visit Frankfurt for 4 days. **Day 8:** Fly from Frankfurt to Helsinki. **Day 8-11:** Visit Helsinki for 4 days. **Day 11:** Fly from Helsinki to Stockholm. **Day 11-12:** Visit Stockholm for 2 days. **Day 12:** Fly from Stockholm to Santorini. **Day 12-13:** Visit Santorini for 2 days. **Day 13:** Fly from Santorini to Milan. **Day 13-16:** Visit Milan for 4 days. **Day 16:** Fly from Milan to Dubrovnik. **Day 16-17:** Visit Dubrovnik for 2 days. **Day 17:** Fly from Dubrovnik to Vilnius. **Day 17-20:** Visit Vilnius for 4 days. **Day 20:** Fly from Vilnius to Florence. **Day 20-22:** Visit Florence for 3 days. >>>2:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly >>>3:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly from Milan to Reykjavik. **Day 4-7:** Visit Reykjavik for 5 days. **Day 7:** Fly from Reykjavik to Stockholm. **Day 7-9:** Visit Stockholm for 2 days. **Day 9:** Fly from Stockholm to Helsinki. **Day 9-13:** Visit Helsinki for 4 days. **Day 13:** Fly from Helsinki to Vilnius. **Day 13-17:** Visit Vilnius for 4 days. **Day 17:** Fly from Vilnius to Frankfurt. **Day 17-20:** Visit Frankfurt for 4 days. **Day 20:** Fly from Frankfurt to Florence. **Day 20-22:** Visit Florence for 3 days. **Day 22:** Fly from Florence to Dubrovnik. **Day 22:** Visit Dubrovnik for 2 days. >>>4:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly from Milan to Reykjavik. **Day 4-8:** Visit Reykjavik for 5 days. **Day 8:** Fly from Reykjavik to Stockholm. **Day 8-10:** Visit Stockholm for 2 days. **Day 10:** Fly >>>5:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly from Milan to Reykjavik. **Day 4-8:** Visit Reykjavik for 5 days. **Day 8:** Fly from Reykjavik to Helsinki. **Day 8-11:** Visit Helsinki for 4 days. ** >>>6:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Milan and visit Milan for 4 days. **Day 4:** Fly from Milan to Stockholm. **Day 4-7:** Visit Stockholm for 4 days. **Day 7:** Fly from Stockholm to Reykjavik. **Day 7-11:** Visit Reykjavik for 5 days. **Day 11:** Fly from Reykjavik to Frankfurt. **Day 11-14:** Visit Frankfurt for 4 days. **Day 14:** Fly from Frankfurt to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. **Day 17:** Fly from Vilnius to Helsinki. **Day 17-19:** Visit Helsinki for 3 days. **Day 19:** Fly from Helsinki to Florence. **Day 19-20:** Visit Florence for 2 days. **Day 20:** Fly from Florence to Dubrovnik. **Day 20-22:** Visit Dubrovnik for 3 days. >>>7:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-4:** Arriving in Frankfurt and visit Frankfurt for 4 days. **Day 4:** Fly from Frankfurt to Milan. **Day 4-7:** Visit Milan for 4 days. **Day 7:** Fly from Milan to Reykjavik. **Day 7-11:** Visit Reykjavik for 5 days. **Day 11:** Fly from Reykjavik to Helsinki. **Day 11-14:** Visit Helsinki for 4 days. **Day 14:** Fly from Helsinki to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. **Day 17:** Fly from Vilnius to Stockholm. **Day 17-18:** Visit Stockholm for 2 days. **Day 18:** Fly from Stockholm to Santorini. **Day 18-19:** Visit Santorini for 2 days. **Day 19:** Fly from Santorini to Milan. **Day 19-20:** Visit Milan for 2 days (stopover). **Day 20:** Fly from Milan to Florence. **Day 20-22:** Visit Florence for 3 days. SOLUTION:Here is the trip plan for visiting the 9 European cities for 22 days: **Day 1-2:** Arriving in Dubrovnik and visit Dubrovnik for 2 days. **Day 2:** Fly from Dubrovnik to Stockholm. **Day 2-3:** Visit Stockholm for 2 days. **Day 3:** Fly from Stockholm to Santorini. **Day 3-4:** Visit Santorini for 2 days. **Day 4:** Fly from Santorini to Milan. **Day 4-7:** Visit Milan for 4 days. **Day 7:** Fly from Milan to Reykjavik. **Day 7-11:** Visit Reykjavik for 5 days. **Day 11:** Fly from Reykjavik to Helsinki. **Day 11-14:** Visit Helsinki for 4 days. **Day 14:** Fly from Helsinki to Vilnius. **Day 14-17:** Visit Vilnius for 4 days. **Day 17:** Fly from Vilnius to Frankfurt. **Day 17-20:** Visit Frankfurt for 4 days. **Day 20:** Fly from Frankfurt to Florence. **Day 20-22:** Visit Florence for 3 days.

You plan to visit 5 European cities for 23 days in total. You only take direct flights to commute between cities. You want to spend 3 days in Venice. You want to meet a friend in Venice between day 9 and day 11. You would like to visit Porto for 4 days. You want to spend 6 days in Lyon. You would like to meet your friends at Lyon between day 4 and day 9 to tour together. You would like to visit Athens for 7 days. You plan to stay in Split for 7 days. Here are the cities that have direct flights: Porto and Lyon, Lyon and Venice, Venice and Athens, Athens and Split, Lyon and Split. Find a trip plan of visiting the cities for 23 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-4:** Arriving in Lyon and visit Lyon for 6 days. **Day 4:** Fly from Lyon to Porto. **Day 4-7:** Visit Porto for 4 days. **Day 7:** Fly from Porto to Venice. **Day 7-11:** Visit Venice for 5 days. **Day 11:** Fly from Venice to Athens. **Day 11-17:** Visit Athens for 7 days. **Day 17:** Fly from Athens to Split. **Day 17-23:** Visit Split for 7 days. >>>1:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-7:** Arriving in Split and visit Split for 7 days. **Day 7:** Fly from Split to Athens. **Day 7-13:** Visit Athens for 7 days. **Day 13:** Fly from Athens to Venice. **Day 13-15:** Visit Venice for 3 days. **Day 15:** Fly from Venice to Lyon. **Day 15-20:** Visit Lyon for 6 days. **Day 20:** Fly from Lyon to Porto. **Day 20-23:** Visit Porto for 4 days. >>>2:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-3:** Arriving in Porto and visit Porto for 4 days. **Day 3:** Fly from Porto to Lyon. **Day 3-9:** Visit Lyon for 6 days. **Day 9:** Fly from Lyon to Venice. **Day EE:** Visit Venice for 3 days. **Day 12:** Fly from Venice to Athens. **Day 12-18:** Visit Athens for 7 days. **Day 18:** Fly from Athens to Split. **Day 18-24:** Visit Split for 7 days. >>>3:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-4:** Arriving in Lyon and visit Lyon for 4 days. **Day 4:** Fly from Lyon to Venice. **Day 4-9:** Visit Venice for 5 days. **Day 9:** Fly from Venice to Athens. **Day 9-16:** Visit Athens for 7 days. **Day 16:** Fly from Athens to Split. **Day 16-23:** Visit Split for 7 days. >>>4:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-3:** Arriving in Venice and visit Venice for 3 days. **Day 3:** Fly from Venice to Lyon. **Day 3-4:** Visit Lyon for 2 days. **Day 4:** Fly from Lyon to Porto. **Day 4-7:** Visit Porto for 4 days. **Day 7:** Fly from Porto to Athens. **Day 7-13:** Visit Athens for 7 days. **Day 13:** Fly from Athens to Split. **Day 13-20:** Visit Split for 7 days. **Day 20:** Fly from Split to Venice. **Day 20-23:** Visit Venice for 3 days. >>>5:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-3:** Arriving in Venice and visit Venice for 3 days. **Day 3:** Fly from Venice to Lyon. **Day 3-7:** Meet friends in Lyon and visit Lyon for 6 days. **Day 7:** Fly from Lyon to Porto. **Day 7-10:** Visit Porto for 4 days. **Day 10:** Fly from Porto to Athens. **Day 10-16:** Visit Athens for 7 days. **Day 16:** Fly from Athens to Split. **Day 16-23:** Visit Split for 7 days. >>>6:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-4:** Arriving in Lyon and visit Lyon for 6 days. **Day 4:** Fly from Lyon to Venice. **Day 4-9:** Visit Venice for 6 days. **Day 9:** Fly from Venice to Athens. **Day 9-15:** Visit Athens for 7 days. **Day 15:** Fly from Athens to Split. **Day 15-22:** Visit Split for 7 days. **Day 22:** Fly from Split to Porto. **Day 22-23:** Visit Porto for 2 days. >>>7:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-4:** Arriving in Porto and visit Porto for 4 days. **Day 4:** Fly from Porto to Lyon. **Day 4-9:** Visit Lyon for 6 days. **Day 9:** Fly from Lyon to Venice. **Day 9-11:** Visit Venice for 3 days. **Day 11:** Fly from Venice to Athens. **Day 11-17:** Visit Athens for 7 days. **Day 17:** Fly from Athens to Split. **Day 17-23:** Visit Split for 7 days. SOLUTION:Here is the trip plan for visiting the 5 European cities for 23 days: **Day 1-4:** Arriving in Porto and visit Porto for 4 days. **Day 4:** Fly from Porto to Lyon. **Day 4-9:** Visit Lyon for 6 days. **Day 9:** Fly from Lyon to Venice. **Day 9-11:** Visit Venice for 3 days. **Day 11:** Fly from Venice to Athens. **Day 11-17:** Visit Athens for 7 days. **Day 17:** Fly from Athens to Split. **Day 17-23:** Visit Split for 7 days.

You plan to visit 9 European cities for 24 days in total. You only take direct flights to commute between cities. You plan to stay in Berlin for 4 days. You would like to visit Stockholm for 2 days. From day 22 to day 23, there is a annual show you want to attend in Stockholm. You plan to stay in Prague for 3 days. You want to spend 2 days in Nice. You plan to visit relatives in Nice between day 14 and day 15. You plan to stay in Budapest for 5 days. You would like to visit Venice for 5 days. You want to meet a friend in Venice between day 15 and day 19. You want to spend 5 days in Mykonos. You plan to stay in Dubrovnik for 2 days. You want to spend 4 days in Krakow. Here are the cities that have direct flights: Stockholm and Dubrovnik, Nice and Venice, Krakow and Berlin, Budapest and Berlin, Prague and Stockholm, Berlin and Stockholm, Krakow and Stockholm, Budapest and Mykonos, Nice and Berlin, Nice and Stockholm, Mykonos and Nice, Budapest and Nice, Venice and Berlin, Krakow and Prague, Prague and Budapest. Find a trip plan of visiting the cities for 24 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Budapest. **Day 6-10:** Visit Budapest for 5 days. **Day 10:** Fly from Budapest to Mykonos. **Day 10-14:** Visit Mykonos for 5 days. **Day 14:** Fly from Mykonos to Nice. **Day 14-15:** Visit Nice for 2 days. **Day 15:** Fly from Nice to Venice. **Day 15-19:** Visit Venice for 5 days. **Day 19:** Fly from Venice to Krakow. **Day 19-22:** Visit Krakow for 4 days. **Day 22:** Fly from Krakow to Stockholm. **Day 22-23:** Visit Stockholm for 2 days. **Day 23:** Fly from Stockholm to Dubrovnik. **Day 23-24:** Visit Dubrovnik for 2 days. >>>1:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Stockholm. **Day 4-5:** Visit Stockholm for 2 days. **Day 5:** Fly from Stockholm to Dubrovnik. **Day 5-6:** Visit Dubrovnik for 2 days. **Day 6:** Fly from Dubrovnik to Krakow. **Day 6-9:** Visit Krakow for 4 days. **Day 9:** Fly from Krakow to Prague. **Day 9-11:** Visit Prague for 3 days. **Day 11:** Fly from Prague to Budapest. **Day 11-15:** Visit Budapest for 5 days. **Day 15:** Fly from Budapest to Nice. **Day 15-16:** Visit Nice for 2 days. **Day 16:** Fly from Nice to Venice. **Day 16-19:** Visit Venice for 5 days. **Day 19:** Fly from Venice to Mykonos. **Day 19-23:** Visit Mykonos for 5 days. **Day 23:** Fly from Mykonos to Stockholm. **Day 23-24:** Visit Stockholm for 2 days. >>>2:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Stockholm. **Day 4-5:** Visit Stockholm for 2 days. **Day 5:** Fly from Stockholm to Nice. **Day 5-6:** Visit Nice for 2 days. **Day 6:** Fly from >>>3:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Budapest. **Day 6-11:** Visit Budapest for 5 days. **Day 11:** Fly from Budapest to Venice. **Day 11-15:** Visit Venice for 5 days. **Day 15:** Fly from Venice to Nice. **Day 15-16:** Visit Nice for 2 days. **Day 16:** Fly from Nice to Mykonos. **Day 16-20:** Visit Mykonos for 5 days. **Day 20:** Fly from Mykonos to Dubrovnik. **Day 20-21:** Visit Dubrovnik for 2 days. **Day 21:** Fly from Dubrovnik to Stockholm. **Day 21-23:** Visit Stockholm for 2 days. **Day 23:** Fly from Stockholm to Krakow. **Day 23-26:** Visit Krakow for 4 days. >>>4:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Nice. **Day 6-10:** Visit Nice for 5 days. **Day 10:** Fly from Nice to Venice. **Day 10-14:** Visit Venice for 5 days. **Day 14:** Fly from Venice to Nice. **Day 14-15:** Visit Nice for 2 days. **Day 15:** Fly from Nice to Budapest. **Day 15 >>>5:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-2:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Nice. **Day 6-11:** Visit Nice for 5 days. **Day 11:** Fly from Nice to Budapest. **Day 11-15:** Visit Budapest for 5 days. **Day 15:** Fly from Budapest to Venice. **Day 15-19:** Meet a friend in Venice for 5 days. **Day 19:** Fly from Venice to Mykonos. >>>6:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Berlin and visit Berlin for 4 days. **Day 4:** Fly from Berlin to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Stockholm. **Day 6-7:** Visit Stockholm for 2 days. **Day 7:** Fly from Stockholm to Krakow. **Day 7-9:** Visit Krakow for 3 days. **Day 9:** Fly from Krakow to Budapest. **Day 9-13:** Visit Budapest for 5 days. **Day 13:** Fly from Budapest to Mykonos. **Day 13-15:** Visit Mykonos for 3 days. **Day 15:** Fly from Mykonos to Nice. **Day 15-19:** Visit Nice for 5 days. **Day 19:** Fly from Nice to Venice. **Day 19-23:** Visit Venice for 5 days. **Day 23:** Fly from Venice to Dubrovnik. **Day 23-24:** Visit Dubrovnik for 2 days. >>>7:This task is impossible to complete with the given constraints and flight information. Here's why: 1. **Stockholm Show:** You must be in Stockholm on days 22-23. 2. **Nice Relatives:** You must be in Nice on days 14-15. 3. **Venice Friend:** You must be in Venice between days 15-19. These three constraints create a conflict. You cannot be in Nice on day 15 and also be in Venice on day 15. There are no direct flights between Nice and Venice, making it impossible to travel between them on the same day. **Therefore, you would need to adjust either your dates in Nice, Venice, or Stockholm to make this trip plan possible.** Let me know if you'd like to explore alternative dates or if you have any other trip planning tasks! SOLUTION:Here is the trip plan for visiting the 9 European cities for 24 days: **Day 1-4:** Arriving in Krakow and visit Krakow for 4 days. **Day 4:** Fly from Krakow to Prague. **Day 4-6:** Visit Prague for 3 days. **Day 6:** Fly from Prague to Budapest. **Day 6-10:** Visit Budapest for 5 days. **Day 10:** Fly from Budapest to Mykonos. **Day 10-14:** Visit Mykonos for 5 days. **Day 14:** Fly from Mykonos to Nice. **Day 14-15:** Visit Nice for 2 days. **Day 15:** Fly from Nice to Venice. **Day 15-19:** Visit Venice for 5 days. **Day 19:** Fly from Venice to Berlin. **Day 19-22:** Visit Berlin for 4 days. **Day 22:** Fly from Berlin to Stockholm. **Day 22-23:** Visit Stockholm for 2 days. **Day 23:** Fly from Stockholm to Dubrovnik. **Day 23-24:** Visit Dubrovnik for 2 days.

You plan to visit 4 European cities for 15 days in total. You only take direct flights to commute between cities. You would like to visit Barcelona for 6 days. From day 8 to day 13, there is a annual show you want to attend in Barcelona. You plan to stay in Helsinki for 3 days. You want to spend 6 days in Lyon. During day 3 and day 8, you have to attend a conference in Lyon. You want to spend 3 days in Prague. Here are the cities that have direct flights: Prague and Lyon, Prague and Barcelona, Lyon and Barcelona, Barcelona and Helsinki, Prague and Helsinki. Find a trip plan of visiting the cities for 15 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Helsinki and visit Helsinki for 3 days. **Day 3:** Fly from Helsinki to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Prague. **Day 13-15:** Visit Prague for 3 days. >>>1:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>2:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>3:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>4:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-6:** Visit Lyon for 4 days. **Day 6:** Fly from Lyon to Barcelona. **Day 6-13:** Visit Barcelona for 8 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>5:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-6:** Visit Lyon for 4 days. **Day 6:** Fly from Lyon to Barcelona. **Day 6-13:** Visit Barcelona for 7 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>6:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days. >>>7:It is impossible to create a trip that satisfies all the constraints. Here's why: * **Lyon Constraint:** You must be in Lyon on days 3 and 8 for the conference. * **Barcelona Constraint:** You must be in Barcelona from days 8 to 13 for the annual show. These constraints clash. You cannot be in both Lyon and Barcelona on day 8. Therefore, no flight plan can fulfill all the given requirements. SOLUTION:Here is the trip plan for visiting the 4 European cities for 15 days: **Day 1-3:** Arriving in Prague and visit Prague for 3 days. **Day 3:** Fly from Prague to Lyon. **Day 3-8:** Visit Lyon for 6 days. **Day 8:** Fly from Lyon to Barcelona. **Day 8-13:** Visit Barcelona for 6 days. **Day 13:** Fly from Barcelona to Helsinki. **Day 13-15:** Visit Helsinki for 3 days.

You plan to visit 9 European cities for 29 days in total. You only take direct flights to commute between cities. You want to spend 5 days in Valencia. From day 4 to day 8, there is a annual show you want to attend in Valencia. You want to spend 2 days in Split. You plan to stay in Manchester for 3 days. You plan to stay in Paris for 5 days. You are going to attend a wedding in Paris between day 12 and day 16. You want to spend 3 days in Riga. You would like to visit Santorini for 5 days. You want to spend 5 days in Helsinki. You plan to stay in Vienna for 4 days. You want to spend 5 days in Seville. You would like to meet your friends at Seville between day 8 and day 12 to tour together. Here are the cities that have direct flights: Paris and Split, Paris and Helsinki, Seville and Manchester, Paris and Riga, Valencia and Paris, Vienna and Santorini, Riga and Manchester, Seville and Paris, Vienna and Seville, Vienna and Split, Split and Helsinki, Helsinki and Manchester, Helsinki and Riga, Vienna and Manchester, Vienna and Valencia, Vienna and Helsinki, Vienna and Paris, Manchester and Santorini, Valencia and Seville, Paris and Manchester, from Manchester to Split, Vienna and Riga. Find a trip plan of visiting the cities for 29 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Paris. **Day 5-9:** Visit Paris for 5 days. **Day 9:** Fly from Paris to Riga. **Day 9-11:** Visit Riga for 3 days. **Day 11:** Fly from Riga to Manchester. **Day 11-14:** Visit Manchester for 4 days. **Day 14:** Fly from Manchester to Seville. **Day 14-18:** Visit Seville for 5 days. **Day 18:** Fly from Seville to Vienna. **Day 18-21:** Visit Vienna for 4 days. **Day 21:** Fly from Vienna to Helsinki. **Day 21-25:** Visit Helsinki for 5 days. **Day 25:** Fly from Helsinki to Santorini. **Day 25-29:** Visit Santorini for 5 days. >>>1:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Paris. **Day 5-9:** Visit Paris for 5 days. **Day 9:** Fly from Paris to Seville. **Day 9-12:** Visit Seville for 5 days. **Day 12:** Fly from Seville to Manchester. **Day 12-14:** Visit Manchester for 3 days. **Day 14:** Fly from Manchester to Split. **Day 14-15:** Visit Split for 2 days. **Day 15:** Fly from Split to Helsinki. **Day 15-18:** Visit Helsinki for 5 days. **Day 18:** Fly from Helsinki to Riga. **Day 18-20:** Visit Riga for 3 days. **Day 20:** Fly from Riga to Vienna. **Day 20-23:** Visit Vienna for 4 days. **Day 23:** Fly from Vienna to Santorini. **Day 23-27:** Visit Santorini for 5 days. **Day 27:** Fly from Santorini to Paris. **Day 27-29:** Visit Paris for 2 days. >>>2:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Paris. **Day 5-8:** Visit >>>3:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Seville. **Day 5-8:** Visit Seville for 5 days. **Day 8:** Fly from Seville to Paris. **Day 8-12:** Visit Paris for 5 days. **Day 12:** Fly from Paris to Vienna. **Day 12-16:** Visit Vienna for 4 days. **Day 16:** Fly from Vienna to Santorini. **Day 16-20:** Visit Santorini for 5 days. **Day 20:** Fly from Santorini to Helsinki. **Day 20-24:** Visit Helsinki for 5 days. **Day 24:** Fly from Helsinki to Riga. **Day 24-26:** Visit Riga for 3 days. **Day 26:** Fly from Riga to Manchester. **Day 26-28:** Visit Manchester for 3 days. **Day 28:** Fly from Manchester to Split. **Day 28-29:** Visit Split for 2 days. >>>4:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-4:** Arriving in Valencia and visit Valencia for 5 days. **Day 4:** Fly from Valencia to Paris. **Day 4-8:** Visit Paris for 5 days. **Day 8:** Fly from Paris to Seville. **Day 8-12:** Visit Seville for 5 days. **Day 12:** Fly from Seville to Vienna. **Day 12-16:** Visit Vienna for 4 days. >>>5:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Vienna. **Day 5-8:** Visit Vienna for 4 days. **Day 8:** Fly from Vienna to Seville. **Day 8-12:** Meet friends in Seville for 4 days. **Day 12:** Fly from Seville to Paris. **Day 12-16:** Attend a wedding in Paris >>>6:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-5:** Arriving in Valencia and visit Valencia for 5 days. **Day 5:** Fly from Valencia to Paris. **Day 5-8:** Visit Paris for 4 days. **Day 8:** Fly from Paris to Seville. **Day 8-12:** Visit Seville for 5 days. **Day 12:** Fly from Seville to Manchester. **Day 12-15:** Visit Manchester for 4 days. **Day 15:** Fly from Manchester to Riga. **Day 15-18:** Visit Riga for 4 days. **Day 18:** Fly from Riga to Helsinki. **Day 18-22:** Visit Helsinki for 5 days. **Day 22:** Fly from Helsinki to Vienna. **Day 22-25:** Visit Vienna for 4 days. **Day 25:** Fly from Vienna to Santorini. **Day 25-29:** Visit Santorini for 5 days. >>>7:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-4:** Arriving in Vienna and visit Vienna for 4 days. **Day 4:** Fly from Vienna to Valencia. **Day 4-8:** Visit Valencia for 5 days. **Day 8:** Fly from Valencia to Seville. **Day 8-12:** Visit Seville for 5 days. **Day 12:** Fly from Seville to Paris. **Day 12-16:** Visit Paris for 5 days. **Day 16:** Fly from Paris to Helsinki. **Day 16-20:** Visit Helsinki for 5 days. **Day 20:** Fly from Helsinki to Santorini. **Day 20-24:** Visit Santorini for 5 days. **Day 24:** Fly from Santorini to Manchester. **Day 24-26:** Visit Manchester for 3 days. **Day 26:** Fly from Manchester to Split. **Day 26-27:** Visit Split for 2 days. **Day 27:** Fly from Split to Riga. **Day 27-29:** Visit Riga for 3 days. SOLUTION:Here is the trip plan for visiting the 9 European cities for 29 days: **Day 1-4:** Arriving in Vienna and visit Vienna for 4 days. **Day 4:** Fly from Vienna to Valencia. **Day 4-8:** Visit Valencia for 5 days. **Day 8:** Fly from Valencia to Seville. **Day 8-12:** Visit Seville for 5 days. **Day 12:** Fly from Seville to Paris. **Day 12-16:** Visit Paris for 5 days. **Day 16:** Fly from Paris to Split. **Day 16-17:** Visit Split for 2 days. **Day 17:** Fly from Split to Helsinki. **Day 17-21:** Visit Helsinki for 5 days. **Day 21:** Fly from Helsinki to Riga. **Day 21-23:** Visit Riga for 3 days. **Day 23:** Fly from Riga to Manchester. **Day 23-25:** Visit Manchester for 3 days. **Day 25:** Fly from Manchester to Santorini. **Day 25-29:** Visit Santorini for 5 days.

You plan to visit 4 European cities for 11 days in total. You only take direct flights to commute between cities. You would like to visit Stuttgart for 2 days. From day 10 to day 11, there is a annual show you want to attend in Stuttgart. You plan to stay in Venice for 5 days. You want to meet a friend in Venice between day 4 and day 8. You plan to stay in Brussels for 4 days. You plan to stay in Naples for 3 days. Here are the cities that have direct flights: Venice and Naples, Brussels and Venice, Brussels and Naples, Venice and Stuttgart, Naples and Stuttgart. Find a trip plan of visiting the cities for 11 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-2:** Arriving in Stuttgart and visit Stuttgart for 2 days. **Day 2:** Fly from Stuttgart to Venice. **Day 2-8:** Visit Venice for 7 days. **Day 8:** Fly from Venice to Brussels. **Day 8-10:** Visit Brussels for 3 days. **Day 10:** Fly from Brussels to Naples. **Day 10-11:** Visit Naples for 2 days. >>>1:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-3:** Arriving in Venice and visit Venice for 3 days. **Day 3:** Fly from Venice to Naples. **Day 3-6:** Visit Naples for 4 days. **Day 6:** Fly from Naples to Brussels. **Day 6-9:** Visit Brussels for 4 days. **Day 9:** Fly from Brussels to Stuttgart. **Day 9-11:** Visit Stuttgart for 2 days. >>>2:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-2:** Arriving in Stuttgart and visit Stuttgart for 2 days. **Day 2:** Fly from Stuttgart to Venice. **Day 2-8:** Visit Venice for 5 days. **Day 8:** Fly from Venice to Brussels. **Day 8-11:** Visit Brussels for 4 days. **Day 11:** Fly from Brussels to Naples. **Day 11-13:** Visit Naples for 3 days. >>>3:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-3:** Arriving in Venice and visit Venice for 5 days. **Day 3-4:** Visit Venice for 2 days. **Day 4-8:** Visit Venice for 5 days. **Day 8:** Fly from Venice to Brussels. **Day 8-11:** Visit Brussels for 4 days. >>>4:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-2:** Arriving in Stuttgart and visit Stuttgart for 2 days. **Day 2:** Fly from Stuttgart to Venice. **Day 2-4:** Visit Venice for 3 days. **Day 4:** Fly from Venice to Brussels. **Day 4-8:** Visit Brussels for 5 days. **Day 8:** Fly from Brussels to Naples. **Day 8-11:** Visit Naples for 3 days. >>>5:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-2:** Arriving in Brussels and visit Brussels for 2 days. **Day 2:** Fly from Brussels to Venice. **Day 2-4:** Visit Venice for 3 days. **Day 4:** Fly from Venice to Naples. **Day 4-6:** Visit Naples for 3 days. **Day 6:** Fly from Naples to Stuttgart. **Day 6-8:** Visit Stuttgart for 3 days. **Day 8:** Fly from Stuttgart to Venice. **Day 8-11:** Visit Venice for 4 days. >>>6:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-4:** Arriving in Venice and visit Venice for 5 days. **Day 4:** Fly from Venice to Brussels. **Day 4-8:** Visit Brussels for 4 days. **Day 8:** Fly from Brussels to Naples. **Day 8-10:** Visit Naples for 3 days. **Day 10:** Fly from Naples to Stuttgart. **Day 10-11:** Visit Stuttgart for 2 days. >>>7:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-3:** Arriving in Naples and visit Naples for 3 days. **Day 3:** Fly from Naples to Venice. **Day 3-8:** Visit Venice for 5 days. **Day 8:** Fly from Venice to Brussels. **Day 8-10:** Visit Brussels for 4 days. **Day 10:** Fly from Brussels to Stuttgart. **Day 10-11:** Visit Stuttgart for 2 days. SOLUTION:Here is the trip plan for visiting the 4 European cities for 11 days: **Day 1-4:** Arriving in Brussels and visit Brussels for 4 days. **Day 4:** Fly from Brussels to Venice. **Day 4-8:** Visit Venice for 5 days. **Day 8:** Fly from Venice to Naples. **Day 8-10:** Visit Naples for 3 days. **Day 10:** Fly from Naples to Stuttgart. **Day 10-11:** Visit Stuttgart for 2 days.

You plan to visit 3 European cities for 13 days in total. You only take direct flights to commute between cities. You plan to stay in Venice for 7 days. You plan to stay in Mykonos for 6 days. You want to meet a friend in Mykonos between day 8 and day 13. You plan to stay in Naples for 2 days. Here are the cities that have direct flights: Venice and Naples, Naples and Mykonos. Find a trip plan of visiting the cities for 13 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. >>>1:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. >>>2:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. >>>3:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. Please provide me with a new task and I will try my best to find a suitable solution. >>>4:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. >>>5:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Meet a friend in Mykonos for 6 days. >>>6:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. >>>7:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days. SOLUTION:Here is the trip plan for visiting the 3 European cities for 13 days: **Day 1-7:** Arriving in Venice and visit Venice for 7 days. **Day 7:** Fly from Venice to Naples. **Day 7-8:** Visit Naples for 2 days. **Day 8:** Fly from Naples to Mykonos. **Day 8-13:** Visit Mykonos for 6 days.

You plan to visit 4 European cities for 25 days in total. You only take direct flights to commute between cities. You plan to stay in Berlin for 7 days. You have to attend a workshop in Berlin between day 1 and day 7. You want to spend 7 days in Stockholm. You want to spend 7 days in Riga. You plan to visit relatives in Riga between day 13 and day 19. You plan to stay in Tallinn for 7 days. Here are the cities that have direct flights: Berlin and Stockholm, Berlin and Tallinn, Berlin and Riga, Stockholm and Tallinn, from Riga to Tallinn, Stockholm and Riga. Find a trip plan of visiting the cities for 25 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-14:** Visit Stockholm for 7 days. **Day 14:** Fly from Stockholm to Riga. **Day 14-19:** Visit Riga for 6 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>1:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>2:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>3:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>4:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>5:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>6:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. >>>7:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days. SOLUTION:Here is the trip plan for visiting the 4 European cities for 25 days: **Day 1-7:** Arriving in Berlin and visit Berlin for 7 days. **Day 7:** Fly from Berlin to Stockholm. **Day 7-13:** Visit Stockholm for 7 days. **Day 13:** Fly from Stockholm to Riga. **Day 13-19:** Visit Riga for 7 days. **Day 19:** Fly from Riga to Tallinn. **Day 19-25:** Visit Tallinn for 7 days.

You plan to visit 3 European cities for 11 days in total. You only take direct flights to commute between cities. You want to spend 3 days in Stuttgart. You plan to stay in Reykjavik for 4 days. You want to spend 6 days in Porto. Here are the cities that have direct flights: from Reykjavik to Stuttgart, Stuttgart and Porto. Find a trip plan of visiting the cities for 11 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-3:** Arriving in Stuttgart and visit Stuttgart for 3 days. **Day 3:** Fly from Stuttgart to Reykjavik. **Day 3-7:** Visit Reykjavik for 4 days. **Day 7:** Fly from Reykjavik to Porto. **Day 7-11:** Visit Porto for 6 days. >>>1:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Stuttgart. **Day 4-6:** Visit Stuttgart for 3 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days. >>>2:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Stuttgart. **Day 4-6:** Visit Stuttgart for 3 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days. >>>3:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-3:** Arriving in Stuttgart and visit Stuttgart for 3 days. **Day 3:** Fly from Stuttgart to Reykjavik. **Day 3-7:** Visit Reykjavik for 4 days. **Day 7:** Fly from Reykjavik to Porto. **Day 7-11:** Visit Porto for 6 days. >>>4:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-3:** Arriving in Stuttgart and visit Stuttgart for 3 days. **Day 3:** Fly from Stuttgart to Reykjavik. **Day 3-6:** Visit Reykjavik for 4 days. **Day 6:** Fly from Reykjavik to Porto. **Day 6-11:** Visit Porto for 6 days. >>>5:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-3:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 3:** Fly from Reykjavik to Stuttgart. **Day 3-6:** Visit Stuttgart for 4 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days. >>>6:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-3:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 3:** Fly from Reykjavik to Stuttgart. **Day 3-6:** Visit Stuttgart for 3 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days. >>>7:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Stuttgart. **Day 4-6:** Visit Stuttgart for 3 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days. SOLUTION:Here is the trip plan for visiting the 3 European cities for 11 days: **Day 1-4:** Arriving in Reykjavik and visit Reykjavik for 4 days. **Day 4:** Fly from Reykjavik to Stuttgart. **Day 4-6:** Visit Stuttgart for 3 days. **Day 6:** Fly from Stuttgart to Porto. **Day 6-11:** Visit Porto for 6 days.

You plan to visit 10 European cities for 25 days in total. You only take direct flights to commute between cities. You plan to stay in Madrid for 2 days. You would like to meet your friends at Madrid between day 8 and day 9 to tour together. You plan to stay in Warsaw for 3 days. You would like to visit Split for 4 days. You plan to stay in Tallinn for 5 days. You want to spend 5 days in Salzburg. You are going to attend a wedding in Salzburg between day 21 and day 25. You plan to stay in Dubrovnik for 4 days. You want to meet a friend in Dubrovnik between day 1 and day 4. You want to spend 2 days in Berlin. You want to spend 2 days in Stockholm. You would like to visit Vienna for 4 days. From day 5 to day 8, there is a annual show you want to attend in Vienna. You plan to stay in Manchester for 3 days. During day 9 and day 11, you have to attend a conference in Manchester. Here are the cities that have direct flights: Stockholm and Split, Berlin and Salzburg, Stockholm and Tallinn, Vienna and Manchester, Stockholm and Warsaw, Dubrovnik and Madrid, Vienna and Split, Stockholm and Berlin, Warsaw and Tallinn, Dubrovnik and Vienna, Vienna and Berlin, Dubrovnik and Manchester, Vienna and Madrid, Madrid and Manchester, Split and Warsaw, Dubrovnik and Stockholm, Stockholm and Vienna, Warsaw and Berlin, Madrid and Split, Stockholm and Manchester, from Manchester to Split, Manchester and Berlin, Vienna and Warsaw, Stockholm and Madrid, Madrid and Berlin, Split and Berlin, Tallinn and Berlin, Madrid and Warsaw, Manchester and Warsaw. Find a trip plan of visiting the cities for 25 days by taking direct flights to commute between them. >>>0:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Madrid. **Day 4-8:** Visit Madrid for 5 days. **Day 8:** Fly from Madrid to Warsaw. **Day 8-11:** Visit Warsaw for 4 days. **Day 11:** Fly from Warsaw to Tallinn. **Day 11-15:** Visit Tallinn for 5 days. **Day 15:** Fly from Tallinn to Salzburg. **Day 15-21:** Visit Salzburg for 7 days. **Day 21:** Fly from Salzburg to Vienna. **Day 21-25:** Visit Vienna for 5 days. >>>1:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Stockholm. **Day 4-8:** Visit Stockholm for 5 days. **Day 8:** Fly from Stockholm to Madrid. **Day 8-9:** Visit Madrid for 2 days. **Day 9:** Fly from Madrid to Manchester. **Day 9-11:** Visit Manchester for 3 days. **Day 11:** Fly from Manchester to Berlin. **Day 11-12:** >>>2:no response >>>3:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Vienna. **Day 4-8:** Visit Vienna for 5 days. **Day 8:** Fly from Vienna to Madrid. **Day 8-9:** Visit Madrid for 2 days. **Day 9:** Fly from Madrid to Manchester. **Day >>>4:no response >>>5:no response >>>6:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Stockholm. **Day 4-5:** Visit Stockholm for 2 days. **Day 5:** Fly from Stockholm to Tallinn. **Day 5-8:** Visit Tallinn for 4 days. **Day 8:** Fly from Tallinn to Vienna. **Day 8-12:** Visit Vienna for 5 days. **Day 12:** Fly from Vienna to Manchester. **Day 12-15:** Visit Manchester for 4 days. **Day 15:** Fly from Manchester to Berlin. **Day 15-16:** Visit Berlin for 2 days. **Day 16:** Fly from Berlin to Salzburg. **Day 16-21:** Visit Salzburg for 6 days. **Day 21:** Fly from Salzburg to Madrid. **Day 21-25:** Visit Madrid for 5 days. >>>7:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Vienna. **Day 4-8:** Visit Vienna for 5 days. **Day 8:** Fly from Vienna to Madrid. **Day 8-9:** Visit Madrid for 2 days. **Day 9:** Fly from Madrid to Manchester. **Day 9-11:** Visit Manchester for 3 days. **Day 11:** Fly from Manchester to Split. **Day 11-14:** Visit Split for 4 days. **Day 14:** Fly from Split to Stockholm. **Day 14-15:** Visit Stockholm for 2 days. **Day 15:** Fly from Stockholm to Tallinn. **Day 15-19:** Visit Tallinn for 5 days. **Day 19:** Fly from Tallinn to Berlin. **Day 19-20:** Visit Berlin for 2 days. **Day 20:** Fly from Berlin to Warsaw. **Day 20-22:** Visit Warsaw for 3 days. **Day 22:** Fly from Warsaw to Salzburg. **Day 22-25:** Visit Salzburg for 4 days. SOLUTION:Here is the trip plan for visiting the 10 European cities for 25 days: **Day 1-4:** Arriving in Dubrovnik and visit Dubrovnik for 4 days. **Day 4:** Fly from Dubrovnik to Stockholm. **Day 4-5:** Visit Stockholm for 2 days. **Day 5:** Fly from Stockholm to Vienna. **Day 5-8:** Visit Vienna for 4 days. **Day 8:** Fly from Vienna to Madrid. **Day 8-9:** Visit Madrid for 2 days. **Day 9:** Fly from Madrid to Manchester. **Day 9-11:** Visit Manchester for 3 days. **Day 11:** Fly from Manchester to Split. **Day 11-14:** Visit Split for 4 days. **Day 14:** Fly from Split to Warsaw. **Day 14-16:** Visit Warsaw for 3 days. **Day 16:** Fly from Warsaw to Tallinn. **Day 16-20:** Visit Tallinn for 5 days. **Day 20:** Fly from Tallinn to Berlin. **Day 20-21:** Visit Berlin for 2 days. **Day 21:** Fly from Berlin to Salzburg. **Day 21-25:** Visit Salzburg for 5 days.